1254508

Estriol

United States Pharmacopeia (USP) Reference Standard

• Synonym(s): 1,3,5(10)-Estratriene-3,16α,17β-triol, 16α-Hydroxyestradiol, 3,16α,17β-Trihydroxy-1,3,5(10)-estratriene
• Empirical Formula (Hill Notation): C₁₈H₂₄O₃
• CAS Number: 50-27-1
• Molecular Weight: 288.38
• UNSPSC Code: 41116107
• NACRES: NA.24
• PubChem Substance ID: 329749756
• MDL number: MFCD00003691
• Beilstein/REAXYS Number: 2508172

Properties

• grade: pharmaceutical primary standard
• API family: estriol
• manufacturer/tradename: USP
• mp: 280-282 °C (lit.)
• application(s): pharmaceutical (small molecule)
• format: neat
• SMILES string: C[C@]12CC[C@H]3[C@@H](CCc4cc(O)ccc34)[C@@H]1C[C@@H](O)[C@@H]2O
• InChI: 1S/C18H24O3/c1-18-7-6-13-12-5-3-11(19)8-10(12)2-4-14(13)15(18)9-16(20)17(18)21/h3,5,8,13-17,19-21H,2,4,6-7,9H2,1H3/t13-,14-,15+,16-,17+,18+/m1/s1
• InChI key: PROQIPRRNZUXQM-ZXXIGWHRSA-N

Description

General description

Estriol is found to be a major estrogen in pregnant women. It originates in the placenta from the estrogen precursors, made by the fetal adrenal gland and liver. Estriol levels are directly related to the delivery of the fetus and serve as an index of the fetal well-being.

Application

Estriol USP reference standard, intended for use in specified quality tests and assays as specified in the USP compendia. Also, for use with USP monographs such as:

• Estriol Compounded Vaginal Cream

Analysis Note

These products are for test and assay use only. They are not meant for administration to humans or animals and cannot be used to diagnose, treat, or cure diseases of any kind.  ​

Other Notes

Sales restrictions may apply.

Safety Information

• pictograms: GHS08
• signalword: Danger
• hcodes: H351,H360FD,H362
• pcodes: P202 - P260 - P263 - P264 - P280 - P308 + P313
• Hazard Classifications: Carc. 2 - Lact. - Repr. 1A
• Storage Class: 6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects