C20 Triaromatic sterane CAS 81943-50-2

Purity 97%+In StockPharmaceutical Standards
CAS No.81943-50-2
Molecular FormulaC20H20
Molecular Weight260.37 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

C20 Triaromatic sterane CAS 81943-50-2 chemical structure

Description

As a certified reference material (CRM), C20 Triaromatic sterane 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.

C20 Triaromatic sterane (CAS 81943-50-2), molecular formula C20H20 and molecular weight 260.37 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, C20 Triaromatic sterane (C20H20) contains a polycyclic aromatic system. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 260.37 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

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 FormulaC20H20
Molecular Weight260.37 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)11.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1980

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