Mercusic acid

Mercusic acid
Names
	IUPAC name (1S,4aR,5S,8aR)-5-[(3S)-4-carboxy-3-methylbutyl]-1,4a-dimethyl-6-methylidene-3,4,5,7,8,8a-hexahydro-2H-naphthalene-1-carboxylic acid
	Other names Junicedric acid; 13S-Dihydroagathic acid;
Identifiers
CAS Number	41787-69-3 ;
3D model (JSmol)	Interactive image;
ChEMBL	ChEMBL3781270;
ChemSpider	33823993;
PubChem CID	38347252;
CompTox Dashboard (EPA)	DTXSID70904203;
	InChI InChI=1S/C20H32O4/c1-13(12-17(21)22)6-8-15-14(2)7-9-16-19(15,3)10-5-11-20(16,4)18(23)24/h13,15-16H,2,5-12H2,1,3-4H3,(H,21,22)(H,23,24)/t13-,15-,16+,19+,20-/m0/s1 Key: HPQKNJHVWUWAOR-BWCMQUJESA-N;
	SMILES C[C@@H](CC[C@H]1C(=C)CC[C@@H]2[C@]1(C)CCC[C@]2(C)C(=O)O)CC(=O)O;
Properties
Chemical formula	C20H32O4
Molar mass	336.472 g·mol−1
Density	1.09 g/cm3
Melting point	122–128 °C (252–262 °F; 395–401 K)
Solubility in water	Practically insoluble
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Mercusic acid is a naturally occurring organic compound classified as a diterpenoid with the molecular formula C₂₀H₃₂O₄. The acid features a labdane skeleton with exocyclic double bond at C8(17) and carboxylic groups at C15 and C19.