(1S,4aS,10aR)-1-ethyl-7-isopropyl-4a-methyl-9-oxo-1,2,3,4,4a,9,10,10a-octahydrophenanthrene-1-carboxylate CAS 17751-36-9

Purity 97%+In StockPharmaceutical Standards
CAS No.17751-36-9
Molecular FormulaC21H27O3
Molecular Weight327.44 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

(1S,4aS,10aR)-1-ethyl-7-isopropyl-4a-methyl-9-oxo-1,2,3,4,4a,9,10,10a-octahydrophenanthrene-1-carboxylate CAS 17751-36-9 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 327.44 g/mol gives (1S,4aS,10aR)-1-ethyl-7-isopropyl-4a-methyl-9-oxo-1,2,3,4,4a,9,10,10a-octahydrophenanthrene-1-carboxylate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

(1S,4aS,10aR)-1-ethyl-7-isopropyl-4a-methyl-9-oxo-1,2,3,4,4a,9,10,10a-octahydrophenanthrene-1-carboxylate (CAS 17751-36-9) is a high-purity analytical reference standard with the molecular formula C21H27O3 and a molecular weight of 327.44 g/mol.

Structurally, (1S,4aS,10aR)-1-ethyl-7-isopropyl-4a-methyl-9-oxo-1,2,3,4,4a,9,10,10a-octahydrophenanthrene-1-carboxylate (C21H27O3) contains a steroid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.5, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 327.44 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).

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

CATO manufactures (1S,4aS,10aR)-1-ethyl-7-isopropyl-4a-methyl-9-oxo-1,2,3,4,4a,9,10,10a-octahydrophenanthrene-1-carboxylate 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 FormulaC21H27O3
Molecular Weight327.44 g/mol
AppearancePale yellow to yellow crystalline powder
Purity97%+
StorageStore at 2-8°C, 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
Degree of Unsaturation (DBE)8.5
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1962

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