Helvolic acid

Helvolic acid
Names
	IUPAC name (2Z)-2-[(4S,5S,6S,8S,9S,10R,13R,14S,16S)-6,16-diacetyloxy-4,8,10,14-tetramethyl-3,7-dioxo-5,6,9,11,12,13,15,16-octahydro-4H-cyclopenta[a]phenanthren-17-ylidene]-6-methylhept-5-enoic acid
	Other names Fumigacin
Identifiers
CAS Number	29400-42-8 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:62460 ;
ChEMBL	ChEMBL505132;
ChemSpider	2273343;
PubChem CID	3002143;
UNII	MZX54GS8AH ;
CompTox Dashboard (EPA)	DTXSID201017874;
	InChI InChI=1S/C33H44O8/c1-17(2)10-9-11-21(30(38)39)26-22-12-13-25-31(6)15-14-23(36)18(3)27(31)28(41-20(5)35)29(37)33(25,8)32(22,7)16-24(26)40-19(4)34/h10,14-15,18,22,24-25,27-28H,9,11-13,16H2,1-8H3,(H,38,39)/b26-21-/t18-,22+,24+,25+,27-,28+,31-,32+,33-/m1/s1 Key: MDFZYGLOIJNNRM-OAJDADRGSA-N ;
	SMILES CC1C2C(C(=O)C3(C(C2(C=CC1=O)C)CCC4C3(CC(C4=C(CCC=C(C)C)C(=O)O)OC(=O)C)C)C)OC(=O)C;
Properties
Chemical formula	C33H44O8
Molar mass	568.707 g·mol−1
Appearance	crystalline solid
Density	1.2 g/cm³
Boiling point	675.9
Solubility in water	slightly soluble
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). (what is ?) Infobox references

Helvolic acid is a steroidal antibiotic compound classified as a fusidane-type nortriterpenoid. It is a tetracyclic steroid acid characterized by a 29-nordammarane skeleton, which is substituted with acetoxy groups at positions C-6 and C-16, oxo groups at C-3 and C-7, and double bonds at C-1, C-17(20), and C-24. Its molecular formula is C₃₃H₄₄O₈.