1-Benzyl-5-butyl-6-chloro-3-phenylpyridazin-4(1H)-one CAS 919198-01-9

Purity 97%+In StockPharmaceutical Standards
CAS No.919198-01-9
Molecular FormulaC21H21ClN2O
Molecular Weight352.86 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

1-Benzyl-5-butyl-6-chloro-3-phenylpyridazin-4(1H)-one CAS 919198-01-9 chemical structure

Description

As a certified reference material (CRM), 1-Benzyl-5-butyl-6-chloro-3-phenylpyridazin-4(1H)-one 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.

1-Benzyl-5-butyl-6-chloro-3-phenylpyridazin-4(1H)-one (CAS 919198-01-9) is a high-purity analytical reference standard with the molecular formula C21H21ClN2O and a molecular weight of 352.86 g/mol.

Structurally, 1-Benzyl-5-butyl-6-chloro-3-phenylpyridazin-4(1H)-one (C21H21ClN2O) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 352.86 g/mol, it falls into the moderately-high-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.

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

Physical & Chemical Properties

Molecular FormulaC21H21ClN2O
Molecular Weight352.86 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-like odor)
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)12.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1987
Halogen ContentCl-containing
Nitrogen Atoms2

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