261952-11-8 4 - Methyl - 3 - (trifluoromethyl)benzoyl chloride 4-Methyl-3-trifluoromethyl-benzoyl chloride benzoyl chloride, 4-methyl-3-(trifluoromethyl)- CAS 261952-11-8

Purity 97%+In StockPharmaceutical Standards
CAS No.261952-11-8
Molecular FormulaC9H6ClF3O
Molecular Weight222.59 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

261952-11-8 4 - Methyl - 3 - (trifluoromethyl)benzoyl chloride 4-Methyl-3-trifluoromethyl-benzoyl chloride benzoyl chloride, 4-methyl-3-(trifluoromethyl)- CAS 261952-11-8 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 261952-11-8 4 - Methyl - 3 - (trifluoromethyl)benzoyl chloride 4-Methyl-3-trifluoromethyl-benzoyl chloride benzoyl chloride, 4-methyl-3-(trifluoromethyl)-.

261952-11-8 4 - Methyl - 3 - (trifluoromethyl)benzoyl chloride 4-Methyl-3-trifluoromethyl-benzoyl chloride benzoyl chloride, 4-methyl-3-(trifluoromethyl)- (CAS 261952-11-8), molecular formula C9H6ClF3O and molecular weight 222.59 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, 261952-11-8 4 - Methyl - 3 - (trifluoromethyl)benzoyl chloride 4-Methyl-3-trifluoromethyl-benzoyl chloride benzoyl chloride, 4-methyl-3-(trifluoromethyl)- (C9H6ClF3O) contains a hydroxyl group, an ether linkage, fluorine/chlorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 222.59 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

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 FormulaC9H6ClF3O
Molecular Weight222.59 g/mol
AppearanceOff-white to pale yellow crystalline powder. (slight halide-like odor, low volatility)
Purity97%+
StorageStore at room temperature, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityMay oxidize slowly on prolonged air exposure
Degree of Unsaturation (DBE)5.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2025
Halogen ContentF/Cl-containing

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