Altrenogest is indicated to suppress estrus in animals to facilitate induction of normal estrous cycle activity. It is used in mares to facilitate scheduled breeding activity. It is also used to suppress estrous behavior in performance horses. When treatment is discontinued, mares exhibiting regular estrous cycles return to estrus within 4 to 5 days following treatment and continue to cycle normally.

In swine, altrenogest is used for synchronization of estrus in sexually mature gilts that have had at least one estrous cycle. Do not use in gilts having a previous or current history of uterine inflammation (i.e., acute, subacute, or chronic endometritis).


11-trien-3-one,17-alpha-allyl-17-hydroxy-estra-9; 17-allyltrenbolone; 17-alpha-allyl-estratriene-4,9,11,17-beta-ol-3-one; 17-hydroxy-17-Chemicalbook(2-propenyl)-(17-beta)-estra-11-trien-3-one; D02840; ALLYLTRENBOLONE;ALTRENOGEST; 17-ALPHA-ALLYL-17-BETA-HYDROXYOESTRA-4,9,11-TRIEN-3-ONE

CAS No.: 850 52 2

EC No.: 212-703-1

MF: C21H26O2

MW: 310.44

Parameters of Altrenogest





Yellow Or Pale Yellow Crystalline Powder


Loss On Drying

Specific Rotation



Melting Range

116°C ~121°C

118°C -119°C

Ignition Residue

Other Steroid



100g/bag; 500g/bag; 1kg/bag

Recommended storage method:

Store in a cool, dry and ventilated place.

Recommended storage temperature:

2 - 8 °C

Product usage:

Animal contraceptives

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