(-)-Catechin

Assay:≥98%
Appearance:A crystalline solid

Cat No:	R053850
Cas No:	18829-70-4
Product-Name:	(-)-Catechin
IUPAC Name:	(2S,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-2H-chromene-3,5,7-triol
InChI:	InChI=1S/C15H14O6/c16-8-4-11(18)9-6-13(20)15(21-14(9)5-8)7-1-2-10(17)12(19)3-7/h1-5,13,15-20H,6H2/t13-,15+/m1/s1
InChIKey:	PFTAWBLQPZVEMU-HIFRSBDPSA-N
SMILES:	C1C(C(OC2=CC(=CC(=C21)O)O)C3=CC(=C(C=C3)O)O)O

(−)-Catechin is a diastereoisomer of catechin having a trans 2S,3R configuration at the chiral center. Catechins, in general, are polyphenolic flavonoids that can be isolated from a variety of natural sources including tea leaves, grape seeds, and the wood and bark of trees such as acacia and mahogany. Catechins are potent antioxidants that inhibit the free radical-induced oxidation of isolated LDL by AAPH (Item No. 82235). Catechins and other related procyanidin compounds have antitumor activity when tested in a two-stage mouse epidermal carcinoma model employing topical application.