1-Allyl-3,4,5-tribromo-1H-pyrazole CAS 13369-77-2

Purity 97%+In StockPharmaceutical Standards
CAS No.13369-77-2
Molecular FormulaC6H5Br3N2
Molecular Weight344.83 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

1-Allyl-3,4,5-tribromo-1H-pyrazole CAS 13369-77-2 chemical structure

Description

1-Allyl-3,4,5-tribromo-1H-pyrazole (CAS 13369-77-2) is a high-purity analytical reference standard with the molecular formula C6H5Br3N2 and a molecular weight of 344.83 g/mol.

1-Allyl-3,4,5-tribromo-1H-pyrazole (C6H5Br3N2) contains a nitrile group, bromine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.

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 FormulaC6H5Br3N2
Molecular Weight344.83 g/mol
AppearanceOff-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility)
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)4.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1960
Halogen ContentBr-containing
Nitrogen Atoms2

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