(S)-2-amino-7-methyl-4-(2-nitrophenyl)-5-oxo-4H,5H-pyrano[4,3-b]pyran-3-carbonitrile CAS 293751-78-7

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 (S)-2-amino-7-methyl-4-(2-nitrophenyl)-5-oxo-4H,5H-pyrano[4,3-b]pyran-3-carbonitrile (CAS 293751-78-7), a certified reference material (molecular formula C16H11N3O5, MW 325.28 g/mol) for analytical method development and quality control.

Structurally, (S)-2-amino-7-methyl-4-(2-nitrophenyl)-5-oxo-4H,5H-pyrano[4,3-b]pyran-3-carbonitrile (C16H11N3O5) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 13.0, corresponding to approximately 13 ring(s) or double-bond equivalent(s). With a molecular weight of 325.28 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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

Why CATO?

• ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
• 130,000+ catalog items in stock, COA supplied with every batch
• Worldwide shipping with full export documentation (HS code guidance available)
• Technical support: +86 18665070610 / Nicole.chen@cato-chem.com