5-Ethyl-5-methyl-2-phenyl-1,10b-dihydro-5H-benzo[e]pyrazolo[1,5-c][1,3]oxazine CAS 140473-04-7

Purity 97%+In StockPharmaceutical Standards
CAS No.140473-04-7
Molecular FormulaC19H20N2O
Molecular Weight292.37 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5-Ethyl-5-methyl-2-phenyl-1,10b-dihydro-5H-benzo[e]pyrazolo[1,5-c][1,3]oxazine CAS 140473-04-7 chemical structure

Description

The occurrence of 5-Ethyl-5-methyl-2-phenyl-1,10b-dihydro-5H-benzo[e]pyrazolo[1,5-c][1,3]oxazine is closely related to a steroid core, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

CATO supplies 5-Ethyl-5-methyl-2-phenyl-1,10b-dihydro-5H-benzo[e]pyrazolo[1,5-c][1,3]oxazine (CAS 140473-04-7), a certified reference material (molecular formula C19H20N2O, MW 292.37 g/mol) for analytical method development and quality control.

Structurally, 5-Ethyl-5-methyl-2-phenyl-1,10b-dihydro-5H-benzo[e]pyrazolo[1,5-c][1,3]oxazine (C19H20N2O) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 292.37 g/mol, it falls into the medium-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 5-Ethyl-5-methyl-2-phenyl-1,10b-dihydro-5H-benzo[e]pyrazolo[1,5-c][1,3]oxazine 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 FormulaC19H20N2O
Molecular Weight292.37 g/mol
AppearancePale yellow to yellow crystalline powder
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)11.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1997
Nitrogen Atoms2

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