(2S,3R,5R,10R,13R,14S,17S)-17-[(2R,3R)-2,3-Dihydroxy-6-methylheptan-2-yl]-2,14-dihydroxy-10,13-dimethyl-3-[[(2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl]oxy]-2,3,4,5,9,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-6(10H)-one CAS 20117-33-3

Purity 97%+In StockPharmaceutical Standards
CAS No.20117-33-3
Molecular FormulaC33H54O11
Molecular Weight626.78 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

(2S,3R,5R,10R,13R,14S,17S)-17-[(2R,3R)-2,3-Dihydroxy-6-methylheptan-2-yl]-2,14-dihydroxy-10,13-dimethyl-3-[[(2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl]oxy]-2,3,4,5,9,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-6(10H)-one CAS 20117-33-3 chemical structure

Description

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

(2S,3R,5R,10R,13R,14S,17S)-17-[(2R,3R)-2,3-Dihydroxy-6-methylheptan-2-yl]-2,14-dihydroxy-10,13-dimethyl-3-[[(2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl]oxy]-2,3,4,5,9,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-6(10H)-one (CAS 20117-33-3), molecular formula C33H54O11 and molecular weight 626.78 g/mol, is a CATO reference standard with documented purity and traceability.

Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system, (2S,3R,5R,10R,13R,14S,17S)-17-[(2R,3R)-2,3-Dihydroxy-6-methylheptan-2-yl]-2,14-dihydroxy-10,13-dimethyl-3-[[(2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl]oxy]-2,3,4,5,9,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-6(10H)-one is typically off-white to pale yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 626.78 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).

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 FormulaC33H54O11
Molecular Weight626.78 g/mol
Purity97%+
StorageStore at room temperature, 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)7.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1962

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