Ethyl 5-amino-1-(2,5-dichlorophenyl)-1H-pyrazole-4-carboxylate CAS 1264041-82-8

Purity 97%+In StockPharmaceutical Standards
CAS No.1264041-82-8
Molecular FormulaC12H11Cl2N3O2
Molecular Weight300.14 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Ethyl 5-amino-1-(2,5-dichlorophenyl)-1H-pyrazole-4-carboxylate CAS 1264041-82-8 chemical structure

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Ethyl 5-amino-1-(2,5-dichlorophenyl)-1H-pyrazole-4-carboxylate.

CATO supplies Ethyl 5-amino-1-(2,5-dichlorophenyl)-1H-pyrazole-4-carboxylate (CAS 1264041-82-8), a certified reference material (molecular formula C12H11Cl2N3O2, MW 300.14 g/mol) for analytical method development and quality control.

Structurally, Ethyl 5-amino-1-(2,5-dichlorophenyl)-1H-pyrazole-4-carboxylate (C12H11Cl2N3O2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 300.14 g/mol, it falls into the moderately-high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

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), Ethyl 5-amino-1-(2,5-dichlorophenyl)-1H-pyrazole-4-carboxylate 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 FormulaC12H11Cl2N3O2
Molecular Weight300.14 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-like odor, low volatility)
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; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)8.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1990
Halogen ContentCl-containing
Nitrogen Atoms3

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