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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.
6.1 Dimethyl+Propyl. 6.2 Diethyl+Methyl. 6.3 Ethyl+Trimethyl. 6.4 Pentamethyl. 7 References. Toggle the table of contents. List of isomers of decane. 7 languages ...
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 ...
The subunits that make up each of these structures are identified, i.e., the largest divalent groups that can be named using IUPAC nomenclature of organic chemistry. In the example, the two-carbon ethylidene unit is longer than two separate one-carbon methanediyl units. Figure 1. The order of subunit precedence.
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]
A cycloalkyl group is derived from a cycloalkane by removal of a hydrogen atom from a ring and has the general formula −C n H 2n−1. [2] Typically an alkyl is a part of a larger molecule. In structural formulae, the symbol R is used to designate a generic (unspecified) alkyl group. The smallest alkyl group is methyl, with the formula −CH 3 ...