Isopimaric acid

Isopimaric acid
Names
	IUPAC name (13S)-Pimara-7,15-dien-18-oic acid
	Systematic IUPAC name (1R,4aR,4bS,7S,10aR)-7-Ethenyl-1,4a,7-trimethyl-1,2,3,4,4a,4b,5,6,7,8,10,10a-dodecahydrophenanthrene-1-carboxylic acid
Identifiers
CAS Number	5835-26-7 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:6039 ;
ChEMBL	ChEMBL512164 ;
ChemSpider	390596 ;
ECHA InfoCard	100.163.144
KEGG	C09118 ;
PubChem CID	442048;
UNII	1E37K85HHK ;
CompTox Dashboard (EPA)	DTXSID9022233 ;
	InChI InChI=1S/C20H30O2/c1-5-18(2)12-9-15-14(13-18)7-8-16-19(15,3)10-6-11-20(16,4)17(21)22/h5,7,15-16H,1,6,8-13H2,2-4H3,(H,21,22)/t15-,16+,18-,19+,20+/m0/s1 Key: MXYATHGRPJZBNA-KRFUXDQASA-N ; InChI=1/C20H30O2/c1-5-18(2)12-9-15-14(13-18)7-8-16-19(15,3)10-6-11-20(16,4)17(21)22/h5,7,15-16H,1,6,8-13H2,2-4H3,(H,21,22)/t15-,16+,18-,19+,20+/m0/s1 Key: MXYATHGRPJZBNA-KRFUXDQABR;
	SMILES [H][C@]12[C@](C)(C(O)=O)CCC[C@]1(C)[C@]3([H])C(C[C@](C=C)(C)CC3)=CC2;
Properties
Chemical formula	C20H30O2
Molar mass	302.458 g·mol−1
	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

Isopimaric acid (IPA) is a toxin which acts as a large conductance Ca²⁺-activated K⁺ channel (BK channel) opener.