(7a,17b)-7-(9-Bromononyl)-estra-1,3,5(10)-triene-3,17-diol 17-acetate CAS 875573-66-3

Purity 97%+In StockPharmaceutical Standards
CAS No.875573-66-3
Molecular FormulaC29H43BrO3
Molecular Weight519.55 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

(7a,17b)-7-(9-Bromononyl)-estra-1,3,5(10)-triene-3,17-diol 17-acetate CAS 875573-66-3 chemical structure

Description

The occurrence of (7a,17b)-7-(9-Bromononyl)-estra-1,3,5(10)-triene-3,17-diol 17-acetate is closely related to a steroid core, a hydroxyl group, an ether linkage, bromine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

(7a,17b)-7-(9-Bromononyl)-estra-1,3,5(10)-triene-3,17-diol 17-acetate (CAS 875573-66-3), molecular formula C29H43BrO3 and molecular weight 519.55 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, (7a,17b)-7-(9-Bromononyl)-estra-1,3,5(10)-triene-3,17-diol 17-acetate (C29H43BrO3) contains a steroid core, a hydroxyl group, an ether linkage, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 519.55 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.

CATO manufactures (7a,17b)-7-(9-Bromononyl)-estra-1,3,5(10)-triene-3,17-diol 17-acetate under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

Physical & Chemical Properties

Molecular FormulaC29H43BrO3
Molecular Weight519.55 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-like odor)
Purity97%+
StorageStore at room temperature, protect from light, keep sealed and dry
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)8.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1987
Halogen ContentBr-containing

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