Altrenogest

Altrenogest
Clinical data
Trade names	Regumate, Matrix
Other names	Allyltrenbolone; Allyltrienolone; RU-2267; RH-2267; A-35957; A-41300; 17α-Allylestra-4,9,11-trien-17β-ol-3-one; 17α-Allyl-19-nor-δ9,11-testosterone
Routes of; administration	By mouth
Drug class	Progestogen; Progestin
ATCvet code	QG03DX90 (WHO) ;
Legal status
Legal status	CA: ℞-only;
Identifiers
	IUPAC name (8S,13S,14S,17R)-17-Hydroxy-13-methyl-17-prop-2-enyl-1,2,6,7,8,14,15,16-octahydrocyclopenta[a]phenanthren-3-one;
CAS Number	850-52-2;
PubChem CID	10041070;
ChemSpider	8216634;
UNII	2U0X0JA2NB;
KEGG	D02840;
ChEMBL	ChEMBL1315492;
CompTox Dashboard (EPA)	DTXSID3048863 ;
ECHA InfoCard	100.011.549
Chemical and physical data
Formula	C21H26O2
Molar mass	310.437 g·mol−1
3D model (JSmol)	Interactive image;
	SMILES C[C@]12C=CC3=C4CCC(=O)C=C4CC[C@H]3[C@@H]1CC[C@]2(CC=C)O;
	InChI InChI=1S/C21H26O2/c1-3-10-21(23)12-9-19-18-6-4-14-13-15(22)5-7-16(14)17(18)8-11-20(19,21)2/h3,8,11,13,18-19,23H,1,4-7,9-10,12H2,2H3/t18-,19+,20+,21+/m1/s1; Key:VWAUPFMBXBWEQY-ANULTFPQSA-N;

Altrenogest, sold under the brand names Swinemate and Altren manufactured by Aurora Pharmaceutical and Regumate manufactured by Merck, is a progestin of the 19-nortestosterone group which is widely used in veterinary medicine to suppress or synchronize estrus in horses and pigs. It is available for veterinary use in both Europe (as Regumate) and the United States (as Matrix).