55804-65-4 1H,5H,11H-(1)Benzopyrano(6,7,8-ij)quinolizine-10-carboxylic acid, 2,3,6,7-tetrahydro-11-oxo- 2,3,6,7-Tetrahydro-11-oxo-1H,5H,11H-(1)benzopyrano(6,7,8-ij)quinolizine-10-carboxylic acid EINECS 259-824-6 CAS 55804-65-4

Purity 97%+In StockPharmaceutical Standards
CAS No.55804-65-4
Molecular FormulaC16H21NO4
Molecular Weight291.34 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

55804-65-4 1H,5H,11H-(1)Benzopyrano(6,7,8-ij)quinolizine-10-carboxylic acid, 2,3,6,7-tetrahydro-11-oxo- 2,3,6,7-Tetrahydro-11-oxo-1H,5H,11H-(1)benzopyrano(6,7,8-ij)quinolizine-10-carboxylic acid EINECS 259-824-6 CAS 55804-65-4 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 291.34 g/mol gives 55804-65-4 1H,5H,11H-(1)Benzopyrano(6,7,8-ij)quinolizine-10-carboxylic acid, 2,3,6,7-tetrahydro-11-oxo- 2,3,6,7-Tetrahydro-11-oxo-1H,5H,11H-(1)benzopyrano(6,7,8-ij)quinolizine-10-carboxylic acid EINECS 259-824-6 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies 55804-65-4 1H,5H,11H-(1)Benzopyrano(6,7,8-ij)quinolizine-10-carboxylic acid, 2,3,6,7-tetrahydro-11-oxo- 2,3,6,7-Tetrahydro-11-oxo-1H,5H,11H-(1)benzopyrano(6,7,8-ij)quinolizine-10-carboxylic acid EINECS 259-824-6 (CAS 55804-65-4), a certified reference material (molecular formula C16H21NO4, MW 291.34 g/mol) for analytical method development and quality control.

The molecular framework of 55804-65-4 1H,5H,11H-(1)Benzopyrano(6,7,8-ij)quinolizine-10-carboxylic acid, 2,3,6,7-tetrahydro-11-oxo- 2,3,6,7-Tetrahydro-11-oxo-1H,5H,11H-(1)benzopyrano(6,7,8-ij)quinolizine-10-carboxylic acid EINECS 259-824-6 (C16H21NO4) is characterized by a flavonoid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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 FormulaC16H21NO4
Molecular Weight291.34 g/mol
AppearanceOff-white to pale yellow crystalline powder
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)7.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1972
Nitrogen Atoms1

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