estrogens, conjugated
Drug ingredientThis chemical is an active pharmaceutical ingredient used in FDA-regulated drugs.
Where It Comes From
11 FDA-registered drug labelers
A-S Medication Solutions
Aspen Oss B.V.
Ingenus Pharmaceuticals, LLC
Pfizer Ireland Pharmaceuticals Unlimited Company
Prasco Laboratories
Professional Complementary Health Formulas
Sterling S.p.A.
Symbiotec Pharmalab Limited
U.S. Pharmaceuticals
Wyeth Pharmaceuticals LLC, a subsidiary of Pfizer Inc.
Xinjiang Nuziline Bio-Pharmaceutical Co., Ltd.
Why It Matters
Sectors
Health
Downstream Uses
Appears in 10 drug and cosmetic product listings (FDA).
- •Premarin
- •Conjugated Estrogens
- •Estrogen 1517
- •Premarin Vaginal
- •Duavee
- •estrogens, conjugated
- •Fem Pro Drops 2025
- •Menopause Drops 2044
Show all 10
- •Prempro
- •PMS Drops 2124
FDA Shortage Status
Whether any manufacturer currently reports this drug as in shortage on the FDA Drug Shortages database. "Active Shortage" means at least one presentation has status "current."
No FDA shortage records
Chemical Identity
CAS12126-59-9
PubChem CID45357473
DTXSIDDTXSID9021186
FormulaC18H21NaO5S
Mol. Weight372.4 g/mol
SMILESCC12CCC3C(C1CCC2=O)CCC4=C3C=CC(=C4)OS(=O)(=O)[O-].[Na+]
Data Sources
453574732026-04-07
https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/name/estrogens, conjugated/cids/JSON
Archive: data/sources/pubchem_name/estrogens, conjugated.json
CAS 12126-59-92026-04-25
https://open.fda.gov/data/ndc/
Archive: data/sources/fda/ndc/ndc.json
bulk match2026-04-07
https://open.fda.gov/data/ndc/
Archive: data/sources/fda/ndc/ndc.json