Methylcyclohexane may affect the liver and kidneys. Unconsciousness and death may occur at higher exposures. 1±3. 266 Da. 1-bromo-5-propylcyclododecane. The molecule, however, exists as a pair of cis and trans isomers. In the axial conformation, the methyl group comes in close proximity to the axial hydrogens, an energetically unfavorable effect known as a 1,3 1-Iodo-1-methylcyclohexane. 1 and 4-Methylcyclohexene | C7H12 | CID 11572 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities 4-Methylcyclohexene. The METHYLCYCLOHEXANE structure data file can be Oct 14, 2021 · Data covered by the Standard Reference Data Act of 1968 as amended. 2 : This is known as the "chair" form of cyclohexane from its shape, which vaguely resembles a chair. Molecular Formula CHCl. The device is designed such that two precooled liquids, water and a hydrophobic large-molecule guest substance (LMGS), such as methylcyclohexane, are injected in the form of co-planar cylindrical jets into a hydrate-forming gas phase confined in a high-pressure Jan 3, 2012 · The carbon atoms in the chemical structure of ethyl (1S,2R)-2-methylcyclohexane-1-carboxylate are implied to be located at the corner(s) and hydrogen atoms attached to carbon atoms are not indicated – each carbon atom is considered to be associated with enough hydrogen atoms to provide the carbon atom with four bonds. It is a cycloalkane and a volatile organic compound. ChemSpider ID 15154684. Molecular Formula CHBr. : 583-60-8; Synonyms: Tetrahydro-o-cresol; Linear Formula: CH3C6H9(=O); Empirical Formula: C7H12O; find related Cyclohexane conformation. 070572 Da. C6H11CH3. Monoisotopic mass 132. Monoisotopic mass 126. com. 99; CAS No. Our expert help has broken down your problem into an easy-to-learn solution you can count on. Dec 30, 2019 · The next structure would have 1,3. Methylcyclohexane has two chair conformations that are interconvertible through the ring flipping. Which structure for 1-tert-butyl-4- methylcyclohexane has the lowest energy? 1 11 = III CH3 C (CH3)3 IV C (CH3)3 H₂C CH₂ A) I B) II Tap here or pull up for additional resources H₂C C (CH3)3 C (CH3)3. 1-Isopropyl-2-methylcyclohexan. 2-Methylcyclohexanone is a natural product found in Solanum lycopersicum with data available. Use this 2-Methylcyclohexanecarbaldehyde. The 1,2- and 1,3-dichlorocyclohexanes each have two centers of chirality, bearing the same set of substituents. Having both substituents in the axial position makes this chair conformer of the trans -isomer much less stable and I'm assuming you are talking about trans-1-tert-butyl-3-methylcyclohexane. Monoisotopic mass 140. Answer. 2. ChemSpider ID 10303732. ChemSpider ID 11078. Average mass 96. 170 Da. Predicted data is generated using the ACD/Labs Percepta Platform - PhysChem Module, version: 14. The 1-Chloro-1-methylcyclohexane molecule contains a total of 21 bond (s). Average mass 140. As compared to cyclopentane,b in which a large number of configurations with nearly equal stability result from the opposition of torsional forces about single bonds against forces tending to maintain tetrahedral angles, cyclohexane has one predominant stable configuration, the chair form 2-METHYLCYCLOHEXANOL is an alcohol. 1 and 4-Methylcyclohexane-1-carbaldehyde | C8H14O | CID 13839437 - structure, chemical names, physical and chemical properties, classification, patents, literature Chemical structure: This structure is also available as a 2d Mol file or as a computed 3d SD file The 3d structure may be viewed using Java or Javascript. Use the cyclohexane conformation drawing tool and guide points to draw each structure. Answer Bank 3 1 2 4 U. Hydrogen atoms in axial positions are shown in red, while those in equatorial positions are in blue. Jan 16, 2015 · The structure of 1-bromo-4-methylcyclohexane is C-1 and C-4 are not chiral centres, so there are no optical isomers. cycloalkanes: Cyclic saturated hydrocarbons with a general formula of CnH(2n). It is very common that there are more than one chirality centers in an organic compound. 140854 Da. However, if the two groups are different, as in 1-tert-butyl-1-methylcyclohexane, then the equilibrium favors the conformer in which the larger group (tert-butyl in this case) is in the more stable equatorial position. Other names: Bromocyclohexylmethane; (Bromomethyl)cyclohexane; Cyclohexylmethyl bromide Permanent link for this species. 8 kJ/mol. Methylcyclohexane is used as a solvent and reagent in organic synthesis and polymer chemistry. Methylcyclohexane is a cycloalkane that is cyclohexane substituted by a single methyl group. Identify the number of hydrogen atoms bound to each carbon in the structure. ChEBI. cis-1,3-dichlorocyclobutane. MetaboLights. The major product obtained from this reaction is reacted with sodium ethoxide in ethanol at 55°C. CHEBI:165745. SDS. There are 8 non-H bond (s) and 1 six-membered ring (s). So this is a carbon. Chemistry questions and answers. Isotopologues: Methylcyclohexane-d14; Other names: Cyclohexylmethane; Hexahydrotoluene; Methylcyclohexane; Sextone B; Toluene hexahydride; Hexahydroxytoluene; Metylocykloheksan; Toluene, hexahydro-; UN 2296; NSC May 7, 2010 · The 3D chemical structure image of 1-tert-butyl-4-methylcyclohexane is based on the ball-and-stick model which displays both the three-dimensional position of the atoms and the bonds between them. Draw the structure of the chair conformation of methylcyclohexane in which the methyl group is axially displaced. 1-Bromo-3-methylcyclohexane | C7H13Br | CID 95431 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological However, if the two groups are different, as in 1-tert-butyl-1-methylcyclohexane, then the equilibrium favors the conformer in which the larger group (tert-butyl in this case) is in the more stable equatorial position. Journal of Molecular Structure 1984, 118 (3-4) Answer Option B) ll is Correct . The final 2 structures both have 1,2 so those are preferable to the first two. b) Perform a chair flip on the chair conformation drawn above. Jun 18, 2024 · 1,2,3-triethylcyclopentane. This structure is also available as a 2d Mol file or as a computed 3d SD file The 3d structure may be viewed using Java or Javascript . 2-methylcyclohexanone is a member of the class of cyclohexanones that is cyclohexanone substituted by a methyl group at position 2. 0 °C at 760 mmHg. 631 Da. 093903 Da. 6. 00. Because it is so common among natural and synthetic compounds, and because its conformational features are rather well understood, we shall focus on the six-membered cyclohexane ring in this discussion. Browse Methylcyclohexane and related products at MilliporeSigma. It acts as a starting material for toluene synthesis . 3-Methylcyclohexene | C7H12 | CID 11573 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities Jul 17, 2021 · Methylcyclohexane (MCH) is regarded as an excellent hydrogen energy carrier due to its reasonable theoretical hydrogen storage content (6. 4a (Left one) I, less stable & (Right one) II, more stable. 3D. H CH3 H CH2CH3 H H -H -CH3 CH3CH2 H Н (1R 3R)-1-ethyl-3-methylcyclohexane (18,3S)-1-ethyl-3-methylcyclohexane. For the example of 2-bromo-3-chlorobutane below, there are 2 chirality centers, C2 and C3. Other names: α-Methylcyclohexene; 1-Methylcyclohexene; 1-Methyl-1-cyclohexene; 1-Methylcyclohex-1-ene; 1-Methylcyclohexene-1 Permanent link for this species. 1 Diastereomers. With each chirality center has two possible configurations, R and S, the total number of possible stereoisomers for this compound is four, with This structure is also available as a 2d Mol file or as a computed 3d SD file The 3d structure may be viewed using Java or Javascript. Stereoisomers: (+)-(R)-3-methylcyclohexene; Other names: 3-Methyl-1-cyclohexene; 3-Methylcyclohexene; 3-Methylcyclohex-1-ene; 3-Methylcyclohexene-1 Permanent link for this species. May 20, 2021 · Each carbon atom is understood to be attached to enough hydrogen atoms to give each carbon atom four bonds. ChemSpider ID 32594. Use this link for Chemical structure: This structure is also available as a 2d Mol file or as a computed 3d SD file The 3d structure may be viewed using Java or Javascript. Methylcyclohexane-toluene-hydrogen (MTH) cycle realizes the recycling of materials and energy, and has a good prospect of industrial application. Average mass 224. Question 9 (2 points) The structure for 2-sec-butyl-4-tert-butyl-1-methylcyclohexane is: Bi. This structure makes it a relatively simple alicyclic compound, which is a colorless, flammable liquid with a subtle, distinctive odor. The conformation shown in the video is the most stable because the bulkier group, the tert-butyl group, should be put in the equatorial position as it is a bigger problem when dealing with steric hindrance. They react with oxoacids and carboxylic acids to form esters plus water. Molecular Formula CHO. So let's look at a few. Use this link for bookmarking this species for future reference. Cycloalkanes are alkanes with carbon atoms attached in the form of a closed ring. In the trans isomer, both Predicted - ChemAxon. Cycloalkanes have one or more rings of carbon atoms, and contain only carbon-hydrogen and carbon-carbon single bonds. Figure 4. e. Methylcyclohexane can adopt two basic chair conformations: one in which the methyl group is axial, and one in which it is equatorial. 19. 1-Ethyl-3-methylcyclohexane. Question: Consider the skeletal structure in line-angle (line-bond) mode of 1-isopropyl-2-methylcyclohexane. Identify the two H-CH3 1,3-diaxial steric interactions. We'll start with the free radical bromination of alkyl benzenes. In a sample of cyclohexane, the two identical chair conformers are present in equal concentration, and the hydrogens 1-Ethyl-3-methylcyclohexane | C9H18 | CID 35412 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological Aug 28, 2019 · However, if the two groups are different, as in 1-tert-butyl-1-methylcyclohexane, then the equilibrium favors the conformer in which the larger group tert-butyl group is in the more stable equatorial position. The cis & trans-1,4-dichlorocyclohexanes do not have any chiral centers 1-Chloro-4-methylcyclohexane | C7H13Cl | CID 136731 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological Methylcyclohexane MSDS (material safety data sheet) or SDS, CoA and CoQ, dossiers, brochures and other available documents. Isotopologues: Methylcyclohexane-d14; Other names: Cyclohexylmethane; Hexahydrotoluene; Methylcyclohexane; Sextone B; Toluene hexahydride; Hexahydroxytoluene; Metylocykloheksan; Toluene, hexahydro-; UN 2296; NSC Chemistry. Contact with strong oxidizers may cause fires and explosions. " So for the first reaction, I'm assuming that Methylcyclohexane anhydrous, ≥99%; CAS Number: 108-87-2; EC Number: 203-624-3; Synonyms: Hexahydrotoluene; Linear Formula: C6H11CH3; find Sigma-Aldrich-300306 MSDS, related peer-reviewed papers, technical documents, similar products & more at Sigma-Aldrich Oct 14, 2021 · 1-Ethyl-1-methylcyclohexane | C9H18 | CID 35411 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological Jun 18, 2024 · Draw the following molecules: trans-1,3-dimethylcyclohexane. 196 Da. There are 7 non-H bond (s) and 1 six-membered ring (s). It has a role as an aprotic solvent, a plant metabolite and a human metabolite. Condensed structural formulas show the hydrogen atoms (or other atoms or groups) right next to the carbon Methylcyclohexane. Definition. Jan 23, 2023 · Substituted Cyclohexanes. 020050 Da. 8. Molecular Formula CHI. 083 Da. Molecular Formula CH. It has a role as a flavouring agent and a plant metabolite. Nov 23, 2007 · Quote. CAS #: 108-87-2 EC Number: 203-624-3 Molar Mass: 98. Average mass 177. 4 kJ/mol (2. Draw the structure for the most stable chair conformation of trans-1-isopropyl-3-methylcyclohexane. The structure data file (SDF/MOL File) of METHYLCYCLOHEXANE is available for download in the SDF page of METHYLCYCLOHEXANE providing the information about the atoms, bonds, connectivity and coordinates of METHYLCYCLOHEXANE, which is not completely available in the chemical formula representation. It derives from a hydride of a cyclohexane. Methylcyclohexane strongly prefers the equatorial conformation. Chemical structure: This structure is also available as a 2d Mol file or as a computed 3d SD file The 3d structure may be viewed using Java or Javascript. Draw the structure of methylcyclohexane. It is a component of jet fuel and also used as correction fluid in certain consumer products. 5. Other names: p-Methylcyclohexyl bromide; 4-Methylcyclohexyl bromide; 4-Methylcyclohexyl bromide cis+trans; 1-bromo-4-methylcyclohexane . ChemSpider ID 10179050. ChemSpider ID 120490. ChemSpider ID 452951. Draw the skeletal structure formula and show orientations of both substituent and H at each substituent location. Draw the skeletal structure of the major organic product resulting from the second reaction. Question: Draw the structure of the chair conformation of Mar 14, 2024 · Visit ChemicalBook To find more Methylcyclohexane(108-87-2) information like chemical properties,Structure,melting point,boiling point,density,molecular formula,molecular weight, physical properties,toxicity information,customs codes. Feb 8, 2007 · 2-Methylcyclohexane-1,3-diol | C7H14O2 | CID 13071125 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological Aldrich-M38400; 2-Methylcyclohexanone 0. cyclic: Chemical compounds arranged in the form of a ring or a closed chain form. This structure is also available as a 2d Mol file or as a computed 3d SD file The 3d structure may be viewed using Java or Javascript. Isotopologues: Methylcyclohexane-d14; Other names: Cyclohexylmethane; Hexahydrotoluene; Methylcyclohexane; Sextone B; Toluene hexahydride; Hexahydroxytoluene; Metylocykloheksan; Toluene, hexahydro-; UN 2296; NSC Feb 12, 2015 · Start with the wedge-dash notation for cis-1-chloro-3-methylcyclohexane, which looks like this Since the compound is cis, the chloro and the methyl groups must either be on a wedge, or on a dash. (2 pts each) Fim Me b. 2: Cis-Trans Isomerism in Cycloalkanes. 156494 Da. 1-Chloro-4-methylcyclohexane. You can also browse global suppliers,vendor,prices,Price,manufacturers of Methylcyclohexane(108-87-2). Images of the chemical structure of 1-Chloro-1-methylcyclohexane are given below: The 2D This structure is also available as a 2d Mol file or as a computed 3d SD file The 3d structure may be viewed using Java or Javascript. May 7, 2021 · 4-Chloro-1-ethyl-2-methylcyclohexane | C9H17Cl | CID 118913366 - structure, chemical names, physical and chemical properties, classification, patents, literature Dec 16, 2021 · 5. Drag the ethyl and hydrogen groups to the appropriate bonds. 1 and is Oct 15, 2020 · Cyclohexane, for example, has a ring structure that looks like this: Figure 2 : This is known as the "chair" form of cyclohexane from its shape, which vaguely resembles a chair. And so here is my alkyl benzene, so a benzene ring, and I have an alkyl group attached to that. 006180 Da. Use this link for bookmarking This paper is a continuation of studies on the structural and thermodynamic properties of hydrocarbons. The naming of cycloalkanes follows a set of rules similar to that used for naming …. Enthalpy of Vaporization: 32. At any instant, almost all the methylcyclohexane molecules in a given sample exist in chair conformations, and about 95 percent… exane. Drow the substituents in the specified locations on the given cyclohexane ring to show the most stable chair conformation. Jan 23, 2023 · The 1,1-dichloro isomer is omitted because it is an unexceptional constitutional isomer of the others, and has no centers of chirality (asymmetric carbon atoms). The molecule can exist in two different chair conformation. Label the methyl group as axial/equatorial and up/down c) Label any interactions on the two conformations above that are destabilizing. Jan 23, 2023 · Methylcyclohexane can adopt two basic chair conformations: one in which the methyl group is axial, and one in which it is equatorial. 4 Determine the R/S configuration of the chirality center in following compounds. 19. 17 Conformations of trans-1,2-dimethylcyclohexane. The energy cost of having one tert-butyl group axial (versus equatorial) can be calculated from the values in table 4. 22 wt%) and physicochemical performance. This entity has been manually annotated by the ChEBI Team. - 2 of 2 defined stereocentres. Submitter. Density: Boiling Point: 101. If you were to flip the chair conformation, the tert-butyl would Chemistry questions and answers. Average mass 126. MolPort-046-683-749, MolPort-047-346-126, ZINC000032840704. A cycloalkane that is cyclohexane substituted by a single methyl group. 1±0. Note: The cyclohexane molecule is constantly changing, with the atom on the left, which is currently pointing down, flipping up, and the atom on the right flipping down. Jan 23, 2023 · alkyl: A structure that is formed when a hydrogen atom is removed from an alkane. 7 kcal/mol) over the conformation with both methyl groups axial (bottom). 1,2-Diethyl-3-methylcyclohexane | C11H22 | CID 549962 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more. Stars. 186 Da. Note: The cyclohexane molecule is constantly changing, with the atom on the left, which is currently pointing down, flipping up, and the atom on the right flipping 1-Isopropyl-2-methylcyclohexane. 1-Bromo-4-methylcyclohexane | C7H13Br | CID 22727 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological How to draw the structure for methylcyclohexane | Drawing Cyclic Compounds | Drawing Alkanes Organic Chemistry IntroductionDrawing structures for Cyclic Comp This allows us to see all the eclipsed hydrogens and all of the torsional strain, so the boat conformation is much higher in energy compared to the chair conformation, the chair conformation is the lowest in energy. Prolonged or repeated skin contact can cause cracking and drying of exposed areas. Molecular Weight 98. Cyclohexane conformations are any of several three-dimensional shapes adopted by molecules of cyclohexane. 3: Condensed Structural and Skeletal Formulas is shared under a license and was authored, remixed, and/or curated by LibreTexts. Average mass 114. Monoisotopic mass 114. 082 Da. Because many compounds feature structurally similar six-membered Question: Draw the structure of methylcyclohexane. 239 Da. This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Monoisotopic mass 96. The most stable chair conformation of cis-1-isopropyl-4-methylcyclohexane. The above image shows both of them on wedges. CoA. The METHYLCYCLOHEXANE molecule contains a total of 21 bond (s). Reason and explaination In structure 1-tert-butyl-4 methylcyclohexane has the lowest en …. Flammable and/or toxic gases are generated by the combination of these materials with alkali metals, nitrides, and strong reducing agents. Isotopologues: Methylcyclohexane-d14; Other names: Cyclohexylmethane; Hexahydrotoluene; Methylcyclohexane; Sextone B; Toluene hexahydride; Hexahydroxytoluene; Metylocykloheksan; Toluene, hexahydro-; UN 2296; NSC Dec 16, 2021 · Draw the structure of following compounds, determine which one has an chirality center and label it with a star. Create the enantiomer of 1R 3R)-1-ethyl-3-methylcyclohexane by completing the flipped chair structure on the right. The radius of the spheres is therefore smaller than the rod lengths in order to provide a clearer view of the atoms and bonds throughout the chemical Nov 1, 2023 · Cyclohexane, for example, has a ring structure that looks like this: Figure 4. Images of the chemical structure of METHYLCYCLOHEXANE are given below: The 2D chemical structure image of METHYLCYCLOHEXANE is also called skeletal formula, which is the standard notation for organic molecules. Isotopologues: Methylcyclohexane-d14; Other names: Cyclohexylmethane; Hexahydrotoluene; Methylcyclohexane; Sextone B; Toluene hexahydride; Hexahydroxytoluene; Metylocykloheksan; Toluene, hexahydro-; UN 2296; NSC Oct 14, 2021 · 1-Ethyl-2-methylcyclohexane | C9H18 | CID 35413 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological 1-Methylcyclohexanol | C7H14O | CID 11550 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities For trans - methyl-1-chlorocyclohexane, to obtains a chair conformation which places the chlorine substituent in the axial orientation required for E2 elimination, the methyl substituents is also forced into an axial position. Comment on this record. Draw a new structure for the axially substituted methylcyclohexane. 7. Synonyms: Hexahydrotoluene. 2-bromo-1-chloro-4-methylcyclohexane. There are 2 steps to solve this one. Stereoisomers are molecules that have the same molecular formula, the same atom connectivity, but they differ in the relative spatial orientation of the atoms. There are actually, there are other conformations of cyclohexane, so the boat conformation can actually twist a little bit to give For substituted cyclohexane, however, the two chair conformations are not equivalent anymore. CAS 108-87-2. 1-Bromo-1-methylcyclohexane. History. Used as a solvent. ChemSpider ID 10310224. The 3rd substituent on structure 3 would be at the 5 position leading to 1,2,5 while in the final structure the 3rd methyl group is on carbon 4 leading to 1,2,4. 3 Draw the pair of enantiomers of 2-chloro-1-propanol. ChemSpider ID 9163083. 3-cyclobutyl-2-methylhexane. 1-Chloro-3-methylcyclohexane. In conformation I, the methyl group Chemistry questions and answers. 6±0. Monoisotopic mass 224. Exposure to Methylcyclohexane can cause you to feel dizzy and lightheaded. Other articles where methylcyclohexane is discussed: hydrocarbon: Cycloalkanes: In methylcyclohexane, the chair conformation in which the large methyl group is equatorial is the most stable and, therefore, the most populated of all possible conformations. Recognize that methylcyclohexane is a hydrocarbon, which may fall into the categories of Alkane, Alkene, or Alkyne, and that in this case, it is a cyclic alkane. Label all the chirality centers in the following molecules. Molecular FormulaC9H18. "Methylcyclohexane reacts with molecular bromine (Br2) in the presence of light and heat. Supplier Information. 2-Methylcyclohexanecarbaldehyd. Reactions that occur at the benzylic position are very important for synthesis problems. 104462 Da. A cyclohexane molecule in chair conformation. Now we have to determine which is better between the final 2 structures. 1. Monoisotopic mass 176. ChemSpider ID 11084. 19 g/mol Chemical Formula: C₆H₁₁CH₃ Hill Formula: C₇H₁₄. 1 mmHg at 25°C. Assign each chiral center either an Ror S configuration by writing Ror Sin each small box. Average mass 132. At last,Methylcyclohexane(108-87-2) safety, risk, hazard 1-Bromo-1-methylcyclohexane | C7H13Br | CID 12502129 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological Feb 12, 2009 · This paper reports the experimental examination of a novel device for the continuous, high-rate formation of a structure-H hydrate. 4. Vapour Pressure: 41. The dehydrogenation process is highly reversible, and the industrial Dec 21, 2022 · Catalytic cracking technology is an important candidate for the crude-to-chemicals, which is promising to convert oil into chemicals by a clean and efficient way. In the axial conformation, the methyl group comes in close proximity to the axial hydrogens, an energetically unfavorable effect known as a 1,3 Oct 14, 2021 · 1-Chloro-1-methylcyclohexane | C7H13Cl | CID 136732 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological Molecular structure of methylcyclohexane as investigated by gas electron diffraction. Chemistry. The first chair conformation for the compound looks like this The chloro group is UP in axial position, the same as the methyl group, which is UP in axial Chemical structure: This structure is also available as a 2d Mol file or as a computed 3d SD file The 3d structure may be viewed using Java or Javascript. A chemical structure of a molecule includes the arrangement of atoms and the chemical bonds that hold the atoms together. For trans-1-fluoro-3-methylcyclohexane (structure shown below), answer the following questions. Methylcyclohexane is a saturated hydrocarbon with the chemical formula C7H14, consisting of a cyclohexane ring substituted with a single methyl group. a. 2) a) Draw a chair conformation of methylcyclohexane where the methyl group is in an axial up position. n-Heptane, methylcyclohexane and cyclopentene catalytic cracking over HZSM-5 zeolites were studied at 320–550 °C under atmosphere, and a particular attention was paid to the effects of reaction temperature and time on stream. Let’s see the example of methylcyclohexane. View Products on Sigmaaldrich. We therefore predict that trans -1,2-dimethylcyclohexane will exist almost exclusively in the diequatorial conformation. Stereoisomers: Cyclohexane, 1-ethyl-2-methyl-, cis-Cyclohexane, 1-ethyl-2-methyl-, trans-Other names: 1-Ethyl-2-methylcyclohexane Permanent link for this species. Species with the same structure: Cyclohexanone, 4-methyl-Other names: 4-Methylcyclohexanone; p-Methyl cyclohexanone; 4-Methyl-1-cyclohexanone; Methyl-4 cyclohexanone-1; Methylcyclohexanone 3-Methylcyclohexanol. The conformation with both methyl groups equatorial (top) is favored by 11. cis-1-bromo-4-methylcyclohexane and trans-1-bromo-4-methylcyclohexane In a cis-1,4-disubstutited cyclohexane, one substituent is always equatorial, and the other is always axial. trans-1,2-dibromocyclopentane. vh st ob gv di vp uc vl jt dd