Chlorogenic acid

Chlorogenic acid
Names
	Preferred IUPAC name (1S,3R,4R,5R)-3-{[(2E)-3-(3,4-Dihydroxyphenyl)prop-2-enoyl]oxy}-1,4,5-trihydroxycyclohexane-1-carboxylic acid
	Other names 3-(3,4-Dihydroxycinnamoyl)quinate; 3-(3,4-Dihydroxycinnamoyl)quinic acid; 3-Caffeoylquinate; 3-Caffeoylquinic acid; 3-CQA; 3-O-Caffeoylquinic acid; Chlorogenate; Chlorogenic acid; Heriguard; 3-trans-Caffeoylquinic acid; 5-O-Caffeoylquinic acid
Identifiers
CAS Number	202650-88-2 ; 327-97-9 (E/Z);
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:16112 ;
ChEMBL	ChEMBL284616 ;
ChemSpider	1405788 ;
KEGG	C00852;
PubChem CID	1794427;
RTECS number	GU8480000;
UNII	318ADP12RI (E) ;
CompTox Dashboard (EPA)	DTXSID101318952 ;
	InChI InChI=1S/C16H18O9/c17-9-3-1-8(5-10(9)18)2-4-13(20)25-12-7-16(24,15(22)23)6-11(19)14(12)21/h1-5,11-12,14,17-19,21,24H,6-7H2,(H,22,23)/b4-2+/t11-,12-,14-,16+/m1/s1 Key: CWVRJTMFETXNAD-JUHZACGLSA-N ; InChI=1/C16H18O9/c17-9-3-1-8(5-10(9)18)2-4-13(20)25-12-7-16(24,15(22)23)6-11(19)14(12)21/h1-5,11-12,14,17-19,21,24H,6-7H2,(H,22,23)/b4-2+/t11-,12-,14-,16+/m1/s1 Key: CWVRJTMFETXNAD-JUHZACGLBD;
	SMILES O=C(O)[C@]2(O)C[C@@H](O)[C@@H](O)[C@H](OC(=O)\C=C\c1ccc(O)c(O)c1)C2;
Properties
Chemical formula	C16H18O9
Molar mass	354.311 g·mol−1
Density	1.28 g/cm3
Melting point	207 to 209 °C (405 to 408 °F; 480 to 482 K)
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H315, H319, H335
Precautionary statements	P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, P501
NFPA 704 (fire diamond)	1 0
Safety data sheet (SDS)	External MSDS
	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

Chlorogenic acid (CGA) is the ester of caffeic acid and quinic acid, functioning as an intermediate in lignin biosynthesis. The term chlorogenic acids refers to a related polyphenol family of esters, including hydroxycinnamic acids (caffeic acid, ferulic acid and p-coumaric acid) with quinic acid.

Despite the "chloro" of the name, chlorogenic acids contain no chlorine. Instead, the name comes from the Greek χλωρός (khloros, light green) and -γένος (genos, a suffix meaning "giving rise to"), pertaining to the green color produced when chlorogenic acids are oxidized.