3-[2-[(1R,4aβ)-2-Methylene-5α-(hydroxymethyl)-5,8aα-dimethyl-6α-hydroxydecalin-1α-yl]ethyl]-2,5-dihydrofuran-2-one

CAS	4176-97-0
Structure
Synonyms	Andrographolide Impurity 8
IUPAC Name	4-[2-[(1R,4aS,5R,6R,8aS)-6-hydroxy-5-(hydroxymethyl)-5,8a-dimethyl-2-methylidene-3,4,4a,6,7,8-hexahydro-1H-naphthalen-1-yl]ethyl]-2H-furan-5-one
Molecular Weight	334.45
Molecular Formula	C20H30O4
Canonical SMILES	C[C@@]12CC[C@H]([C@@]([C@H]1CCC(=C)[C@H]2CCC3=CCOC3=O)(C)CO)O
InChI	InChI=1S/C20H30O4/c1-13-4-7-16-19(2,10-8-17(22)20(16,3)12-21)15(13)6-5-14-9-11-24-18(14)23/h9,15-17,21-22H,1,4-8,10-12H2,2-3H3/t15-,16+,17-,19+,20+/m1/s1
InChI Key	GVRNTWSGBWPJGS-YSDSKTICSA-N
Boiling Point	509.5±50.0 °C
Melting Point	176-178 °C
Purity	98%
Density	1.15 g/ml
pKa	14.89±0.70
Appearance	Solid