Pimelic acid

Pimelic acid
Names
	Preferred IUPAC name Heptanedioic acid
Identifiers
CAS Number	111-16-0 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:30531 ;
ChemSpider	376 ;
DrugBank	DB01856 ;
ECHA InfoCard	100.003.492
EC Number	203-840-8;
PubChem CID	385;
UNII	BZQ96WX25F ;
CompTox Dashboard (EPA)	DTXSID5021598 ;
	InChI InChI=1S/C7H12O4/c8-6(9)4-2-1-3-5-7(10)11/h1-5H2,(H,8,9)(H,10,11) Key: WLJVNTCWHIRURA-UHFFFAOYSA-N ; InChI=1/C7H12O4/c8-6(9)4-2-1-3-5-7(10)11/h1-5H2,(H,8,9)(H,10,11) Key: WLJVNTCWHIRURA-UHFFFAOYAR;
	SMILES OC(=O)CCCCCC(=O)O;
Properties
Chemical formula	C7H12O4
Molar mass	160.17 g/mol
Appearance	colorless or white solid
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
	Except where otherwise noted, data are 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. Pimelic acid is one CH
₂ unit longer than a related dicarboxylic acid, adipic acid, a precursor to many polyesters and polyamides. However compared to adipic acid, pimelic acid is relatively small in importance industrially. Derivatives of pimelic acid are involved in the biosynthesis of the amino acid lysine and the vitamin biotin.