(3α,5α,17α)-19-Norpregnane-3,17-diol CAS 6961-15-5

Purity 97%+In StockPharmaceutical Standards
CAS No.6961-15-5
Molecular FormulaC20H34O2
Molecular Weight306.48 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

(3α,5α,17α)-19-Norpregnane-3,17-diol CAS 6961-15-5 chemical structure

Description

Structurally, (3α,5α,17α)-19-Norpregnane-3,17-diol (C20H34O2) contains a steroid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 306.48 g/mol, it falls into the moderately-high-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

(3α,5α,17α)-19-Norpregnane-3,17-diol (CAS 6961-15-5) is a high-purity analytical reference standard with the molecular formula C20H34O2 and a molecular weight of 306.48 g/mol.

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

Molecular FormulaC20H34O2
Molecular Weight306.48 g/mol
AppearanceOff-white to pale yellow crystalline powder
Purity97%+
StorageStore at room temperature
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityMay oxidize slowly on prolonged air exposure
Degree of Unsaturation (DBE)4.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1958

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