51787-75-8 4,4'-Dinitro-2-biphenylamine (1,1'-Biphenyl)-2-amine, 4,4'-dinitro- 4,4'-Dinitrobiphenyl-2-ylamine 4,4'-Dinitro-(1,1'-biphenyl)-2-amine EINECS 257-417-8 CCRIS 8158 CAS 51787-75-8

Purity 97%+In StockPharmaceutical Standards
CAS No.51787-75-8
Molecular FormulaC12H21N3O4
Molecular Weight271.31 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

51787-75-8 4,4'-Dinitro-2-biphenylamine (1,1'-Biphenyl)-2-amine, 4,4'-dinitro- 4,4'-Dinitrobiphenyl-2-ylamine 4,4'-Dinitro-(1,1'-biphenyl)-2-amine EINECS 257-417-8 CCRIS 8158 CAS 51787-75-8 chemical structure

Description

51787-75-8 4,4'-Dinitro-2-biphenylamine (1,1'-Biphenyl)-2-amine, 4,4'-dinitro- 4,4'-Dinitrobiphenyl-2-ylamine 4,4'-Dinitro-(1,1'-biphenyl)-2-amine EINECS 257-417-8 CCRIS 8158 (CAS 51787-75-8), molecular formula C12H21N3O4 and molecular weight 271.31 g/mol, is a CATO reference standard with documented purity and traceability.

The molecular framework of 51787-75-8 4,4'-Dinitro-2-biphenylamine (1,1'-Biphenyl)-2-amine, 4,4'-dinitro- 4,4'-Dinitrobiphenyl-2-ylamine 4,4'-Dinitro-(1,1'-biphenyl)-2-amine EINECS 257-417-8 CCRIS 8158 (C12H21N3O4) is characterized by an amino-acid-derived structure, 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 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 FormulaC12H21N3O4
Molecular Weight271.31 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 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)4.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1971
Nitrogen Atoms3

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