tert-butyl (4S)-4-(tert-butoxycarbonylamino)-3-chloro-2-methyl-spiro[4,6-dihydropyrrolo[1,2-b]pyrazole-5,4'-piperidine]-1'-carboxylate CAS 2843691-06-3

Purity 97%+In StockPharmaceutical Standards
CAS No.2843691-06-3
Molecular FormulaC21H33ClN4O4
Molecular Weight440.96 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

tert-butyl (4S)-4-(tert-butoxycarbonylamino)-3-chloro-2-methyl-spiro[4,6-dihydropyrrolo[1,2-b]pyrazole-5,4'-piperidine]-1'-carboxylate CAS 2843691-06-3 chemical structure

Description

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 supplies tert-butyl (4S)-4-(tert-butoxycarbonylamino)-3-chloro-2-methyl-spiro[4,6-dihydropyrrolo[1,2-b]pyrazole-5,4'-piperidine]-1'-carboxylate (CAS 2843691-06-3), a certified reference material (molecular formula C21H33ClN4O4, MW 440.96 g/mol) for analytical method development and quality control.

Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, tert-butyl (4S)-4-(tert-butoxycarbonylamino)-3-chloro-2-methyl-spiro[4,6-dihydropyrrolo[1,2-b]pyrazole-5,4'-piperidine]-1'-carboxylate is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 440.96 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).

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 FormulaC21H33ClN4O4
Molecular Weight440.96 g/mol
AppearanceOff-white to pale 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)7.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2003
Halogen ContentCl-containing
Nitrogen Atoms4

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