Ovandrotone
Ovandrotone, also known as androstenedione-7α-carboxyethylthioether, is a synthetic androstane steroid and the C7α carboxyethylthioether of androstenedione. It is a component of ovandrotone albumin, a conjugate of androstenedione and human [serum albumin] and an immunogen and vaccine against androstenedione that is used to generate androgen immunity and thereby increase the ovulation rate and number of lambs born to ewes.