Pcb No. 121 CAS 56558-18-0

Purity 97%+In StockPharmaceutical Standards
CAS No.56558-18-0
Molecular FormulaC12H5Cl5
Molecular Weight326.43 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Pcb No. 121 CAS 56558-18-0 chemical structure

Description

Pcb No. 121 (CAS 56558-18-0) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C12H5Cl5. Molecular weight: 326.43 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.

Physical & Chemical Properties

Molecular FormulaC12H5Cl5
Molecular Weight326.43 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 chloroform, dichloromethane, ethyl acetate
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)8.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1973
Halogen ContentCl-containing

Recommended Standards

Why CATO?