Podophyllotoxin impurity 4 CAS 138456-91-4

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.138456-91-4
Molecular FormulaC20H20O8
Molecular Weight388.37 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Podophyllotoxin impurity 4 CAS 138456-91-4 chemical structure

Description

Podophyllotoxin impurity 4 (CAS 138456-91-4) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C20H20O8. Molecular weight: 388.37 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.

Physical & Chemical Properties

Molecular FormulaC20H20O8
Molecular Weight388.37 g/mol
AppearancePale yellow to yellow crystalline powder
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)11.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1996

Related Podophyllotoxin Standards

Recommended Standards

Why CATO?