5-Chloro-6-fluoropyrazolo[1,5-a]pyrimidine CAS 1610021-36-7

Purity 97%+In StockPharmaceutical Standards
CAS No.1610021-36-7
Molecular FormulaC6H3ClFN3
Molecular Weight171.56 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5-Chloro-6-fluoropyrazolo[1,5-a]pyrimidine CAS 1610021-36-7 chemical structure

Description

The occurrence of 5-Chloro-6-fluoropyrazolo[1,5-a]pyrimidine is closely related to a nitrile group, fluorine/chlorine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

5-Chloro-6-fluoropyrazolo[1,5-a]pyrimidine (CAS 1610021-36-7), molecular formula C6H3ClFN3 and molecular weight 171.56 g/mol, is a CATO reference standard with documented purity and traceability.

Based on its molecular formula C6H3ClFN3, 5-Chloro-6-fluoropyrazolo[1,5-a]pyrimidine contains a nitrile group, fluorine/chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 171.56 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.

CATO manufactures 5-Chloro-6-fluoropyrazolo[1,5-a]pyrimidine under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

Physical & Chemical Properties

Molecular FormulaC6H3ClFN3
Molecular Weight171.56 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, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)6.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1993
Halogen ContentF/Cl-containing
Nitrogen Atoms3

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