Pimelic acid
Names | |
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IUPAC name
heptanedioic acid | |
Identifiers | |
111-16-0 | |
ChEBI | CHEBI:30531 |
ChemSpider | 376 |
DrugBank | DB01856 |
EC number | 203-840-8 |
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Jmol-3D images | Image |
PubChem | 385 |
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Properties | |
C7H12O4 | |
Molar mass | 160.17 g/mol |
Density | 1.28 g/cm3 |
Melting point | 103 to 105 °C (217 to 221 °F; 376 to 378 K) |
Boiling point | decomposes |
Acidity (pKa) | 4.71 pKa2 = 5.58 [1] |
Except where noted otherwise, data is given for materials in their standard state (at 25 °C (77 °F), 100 kPa) | |
verify (what is: / ?) | |
Infobox references | |
Pimelic acid is the organic compound with the formula HO2C(CH2)5CO2H. Derivatives of pimelic acid are involved in the biosynthesis of the amino acid called lysine. Pimelic acid is one CH
2 unit longer than a related dicarboxylic acid, adipic acid, a precursor to many polyesters and polyamides. It is the final member of the mnemonic used to aid recollection of the order of the first six dicarboxylic acids using their common (not IUPAC) nomenclature: Dicarboxylic acid
Pimelic acid has been synthesized from cyclohexanone and from salicylic acid.[2] In the former route, the additional carbon is supplied by dimethyloxalate, which reacts with the enolate.
See also
References
- ↑ CRC Handbook of Chemistry and Physics 83rd ed. p.8-52
- ↑ Snyder, H. R.; Brooks, A. L.; Shapiro, S. H. "Pimelic Acid from Cyclohexanone" and Müller, A. "Pimelic Acid from Salicylic Acid" Organic Syntheses, Collected Volume 2, p.531 (1943).http://www.orgsyn.org/orgsyn/pdfs/CV2P0531.pdf