tert-Butyl (E)-4-chloro-2-methylbut-2-enoate CAS 56905-10-3

Purity 97%+In StockPharmaceutical Standards
CAS No.56905-10-3
Molecular FormulaC9H15ClO2
Molecular Weight190.67 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

tert-Butyl (E)-4-chloro-2-methylbut-2-enoate CAS 56905-10-3 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 tert-Butyl (E)-4-chloro-2-methylbut-2-enoate.

tert-Butyl (E)-4-chloro-2-methylbut-2-enoate (CAS 56905-10-3), molecular formula C9H15ClO2 and molecular weight 190.67 g/mol, is a CATO reference standard with documented purity and traceability.

tert-Butyl (E)-4-chloro-2-methylbut-2-enoate (C9H15ClO2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.

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 FormulaC9H15ClO2
Molecular Weight190.67 g/mol
Purity97%+
StorageStore at 2-8°C, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityContains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)2.0
CAS Registry Year (est.)1973
Halogen ContentCl-containing

Recommended Standards

Why CATO?