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From left to right: the two isomeric groups propyl and 1-methylethyl (iPr or isopropyl), and the non-isomeric cyclopropyl group. In organic chemistry, a propyl group is a three-carbon alkyl substituent with chemical formula −CH 2 CH 2 CH 3 for the linear form.
dimethyl methane; propyl hydride 4 2 2 C 4 H 10: n-butane: butyl hydride; methylethyl methane 5 3 3 C 5 H 12: n-pentane: amyl hydride; Skellysolve A 6 5 5 C 6 H 14: n-hexane: dipropyl; Gettysolve-B; hexyl hydride; Skellysolve B 7 9 11 C 7 H 16: n-heptane: dipropyl methane; Gettysolve-C; heptyl hydride; Skellysolve C 8 18 24 C 8 H 18: n-octane ...
For example, there are three distinct compounds with the molecular formula : Structural isomers of C 3 H 8 O: I 1-propanol, II 2-propanol, III ethyl-methyl-ether. The first two isomers shown of are propanols, that is, alcohols derived from propane.
The terms "canonical" and "isomeric" can lead to some confusion when applied to SMILES. The terms describe different attributes of SMILES strings and are not mutually exclusive. Typically, a number of equally valid SMILES strings can be written for a molecule. For example, CCO, OCC and C(O)C all specify the structure of ethanol. Algorithms have ...
In chemistry, metamerism is used to define the isomeric relationship between compounds with the same polyvalent, heteroatomic, functional group but differ in the main carbon chain or any of the side chains. It has rather been an obsolete term for isomerism, which has not been recognised by IUPAC in its publications. [1]
These groups are characterized by i) an n-fold proper rotation axis C n; ii) n 2-fold proper rotation axes C 2 normal to C n; iii) a mirror plane σ h normal to C n and containing the C 2 s. The D 1h group is the same as the C 2v group in the pyramidal groups section. The D 8h table reflects the 2007 discovery of errors in older references. [4]
For example, butanol H 3 C−(CH 2) 3 −OH, methyl propyl ether H 3 C−(CH 2) 2 −O−CH 3, and diethyl ether (H 3 CCH 2 −) 2 O have the same molecular formula C 4 H 10 O but are three distinct structural isomers. The concept applies also to polyatomic ions with the same total charge. A classical example is the cyanate ion O=C=N − and ...
propyl pyruvate: 20279-43-0 C 6 H 10 O 4: aceburic acid: C 6 H 10 O 4: adipic acid: C 6 H 10 O 4: conduritol: C 6 H 10 O 4: dianhydrohexitol: C 6 H 10 O 4: ethylidene diacetate: C 6 H 10 O 4: glucal: C 6 H 11 NO 2: cycloleucine: 52-52-8 pipecolic acid: 3105-95-1 C 6 H 12: cyclohexane: 110-82-7 C 6 H 12 N 4 O 3: Streptolidine: 29307-61-7 C 6 H ...