tert-butyl (4S)-7-fluoro-4-methyl-5-(pyrrolidine-1-carbonyl)-4H,5H-imidazo[1,5-a]quinoxaline-3-carboxylate CAS 148011-82-9

Purity 97%+In StockPharmaceutical Standards
CAS No.148011-82-9
Molecular FormulaC21H25FN4O3
Molecular Weight400.45 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

tert-butyl (4S)-7-fluoro-4-methyl-5-(pyrrolidine-1-carbonyl)-4H,5H-imidazo[1,5-a]quinoxaline-3-carboxylate CAS 148011-82-9 chemical structure

Description

The occurrence of tert-butyl (4S)-7-fluoro-4-methyl-5-(pyrrolidine-1-carbonyl)-4H,5H-imidazo[1,5-a]quinoxaline-3-carboxylate is closely related to a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

tert-butyl (4S)-7-fluoro-4-methyl-5-(pyrrolidine-1-carbonyl)-4H,5H-imidazo[1,5-a]quinoxaline-3-carboxylate (CAS 148011-82-9), molecular formula C21H25FN4O3 and molecular weight 400.45 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, tert-butyl (4S)-7-fluoro-4-methyl-5-(pyrrolidine-1-carbonyl)-4H,5H-imidazo[1,5-a]quinoxaline-3-carboxylate (C21H25FN4O3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. 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 400.45 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).

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.

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 FormulaC21H25FN4O3
Molecular Weight400.45 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-like odor)
Purity97%+
StorageStore in a cool place (≤25°C), protect from light, keep sealed and dry
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)11.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1999
Halogen ContentF-containing
Nitrogen Atoms4

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