(3aR,4S,9bS)-Ethyl 8-acetyl-3a,4,5,9b-tetrahydro-3H-cyclopenta[c]quinoline-4-carboxylate CAS 1243175-48-5

Purity 97%+In StockPharmaceutical Standards
CAS No.1243175-48-5
Molecular FormulaC17H19NO3
Molecular Weight285.34 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

(3aR,4S,9bS)-Ethyl 8-acetyl-3a,4,5,9b-tetrahydro-3H-cyclopenta[c]quinoline-4-carboxylate CAS 1243175-48-5 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 285.34 g/mol gives (3aR,4S,9bS)-Ethyl 8-acetyl-3a,4,5,9b-tetrahydro-3H-cyclopenta[c]quinoline-4-carboxylate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

(3aR,4S,9bS)-Ethyl 8-acetyl-3a,4,5,9b-tetrahydro-3H-cyclopenta[c]quinoline-4-carboxylate (CAS 1243175-48-5), molecular formula C17H19NO3 and molecular weight 285.34 g/mol, is a CATO reference standard with documented purity and traceability.

The molecular framework of (3aR,4S,9bS)-Ethyl 8-acetyl-3a,4,5,9b-tetrahydro-3H-cyclopenta[c]quinoline-4-carboxylate (C17H19NO3) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).

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 (3aR,4S,9bS)-Ethyl 8-acetyl-3a,4,5,9b-tetrahydro-3H-cyclopenta[c]quinoline-4-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 FormulaC17H19NO3
Molecular Weight285.34 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)9.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1990
Nitrogen Atoms1

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