Doxycycline Impurity 20 CAS 2000233-92-9

Purity >90%In StockPharmacopoeial Impurity Standards
CAS No.2000233-92-9
Molecular FormulaC22H20N2O7
Molecular Weight424.40 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Doxycycline Impurity 20 CAS 2000233-92-9 chemical structure

Description

Doxycycline Impurity 20 (CAS 2000233-92-9) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C22H20N2O7. Molecular weight: 424.40 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.

Physical & Chemical Properties

Molecular FormulaC22H20N2O7
Molecular Weight424.40 g/mol
AppearancePale yellow to yellow crystalline powder
Purity>90%
StorageStore in a cool place (≤25°C), protect from light, keep sealed and dry
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)14.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1996
Nitrogen Atoms2

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