3-Chloro-5-(3-methoxyphenyl)-2-methyl-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine CAS 740837-57-4

Purity 97%+In StockPharmaceutical Standards
CAS No.740837-57-4
Molecular FormulaC15H11ClF3N3O
Molecular Weight341.72 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

3-Chloro-5-(3-methoxyphenyl)-2-methyl-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine CAS 740837-57-4 chemical structure

Description

CATO manufactures 3-Chloro-5-(3-methoxyphenyl)-2-methyl-7-(trifluoromethyl)pyrazolo[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.

3-Chloro-5-(3-methoxyphenyl)-2-methyl-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine (CAS 740837-57-4) is a high-purity analytical reference standard with the molecular formula C15H11ClF3N3O and a molecular weight of 341.72 g/mol.

Structurally, 3-Chloro-5-(3-methoxyphenyl)-2-methyl-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine (C15H11ClF3N3O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 341.72 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.

Physical & Chemical Properties

Molecular FormulaC15H11ClF3N3O
Molecular Weight341.72 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-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)10.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1986
Halogen ContentF/Cl-containing
Nitrogen Atoms3

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