[PAR] [TLE] Premarin [SEP] Premarin is the brand name for an estrogen medication that consists of conjugated estrogens isolated from the urine of pregnant mares (pregnant mares' urine).  It is manufactured by Wyeth (now a part of Pfizer), and was first marketed in 1941 and 1942 in Canada and the United States, respectively, for the treatment of menopausal symptoms. [PAR] [TLE] Wyeth [SEP] Wyeth was a pharmaceutical company purchased by Pfizer in 2009.  The company was founded in Philadelphia, Pennsylvania, in 1860 as John Wyeth and Brother.  It was later known as American Home Products before being renamed to Wyeth in 2002.  Its headquarters moved to Collegeville, Pennsylvania, and Madison, New Jersey, before its headquarters were consolidated with Pfizer's in New York City after the 2009 merger.  The infant and maternal nutrition business was acquired by Nestlé in 2012.
[PAR] [TLE] Premarin [ SEP ] Premarin is the brand name for an estrogen medication that consists of conjugated estrogens isolated from the urine of pregnant mares ( pregnant mares ' urine ) . It is manufactured by Wyeth ( now a part of Pfizer ) , and was first marketed in 1941 and 1942 in Canada and the United States , respectively , for the treatment of menopausal symptoms . [PAR] [TLE] Wyeth [ SEP ] Wyeth was a pharmaceutical company purchased by Pfizer in 2009 . The company was founded in Philadelphia , Pennsylvania , in 1860 as John Wyeth and Brother . It was later known as American Home Products before being renamed to Wyeth in 2002 . Its headquarters moved to Collegeville , Pennsylvania , and Madison , New Jersey , before its headquarters were consolidated with Pfizer 's in New York City after the 2009 merger . The infant and maternal nutrition business was acquired by Nestlé in 2012 .
The manufacturer of Premarin was purchased by Pfizer in what year?
The manufacturer of Premarin was purchased by Pfizer in what year ?
2009
2009