Pigment Yellow 139 CAS 36888-99-0

Purity 97%+In StockPharmaceutical Standards
CAS No.36888-99-0
Molecular FormulaC16H9N5O6
Molecular Weight367.27 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Pigment Yellow 139 CAS 36888-99-0 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 367.27 g/mol gives Pigment Yellow 139 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies Pigment Yellow 139 (CAS 36888-99-0), a certified reference material (molecular formula C16H9N5O6, MW 367.27 g/mol) for analytical method development and quality control.

The molecular framework of Pigment Yellow 139 (C16H9N5O6) 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. 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.

As a certified reference material (CRM), Pigment Yellow 139 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

Molecular FormulaC16H9N5O6
Molecular Weight367.27 g/mol
AppearancePale yellow to yellow crystalline powder
Purity97%+
StorageStore at 2-8°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
Degree of Unsaturation (DBE)15.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1967
Nitrogen Atoms5

Related Pigment Standards

Recommended Standards

Why CATO?