(|AS)-N-Benzoyl-|A-hydroxy-4-(methylsulfonyl)-D-phenylalanine Ethyl Ester 139164-32-2 threo-N-Benzoyl-|A-hydroxy-4-(methylsulfonyl)-D-phenylalanine Ethyl Ester CAS 139164-32-2

Purity 97%+In StockPharmaceutical Standards
CAS No.139164-32-2
Molecular FormulaC19H21NO6S
Molecular Weight391.44 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

(|AS)-N-Benzoyl-|A-hydroxy-4-(methylsulfonyl)-D-phenylalanine Ethyl Ester 139164-32-2 threo-N-Benzoyl-|A-hydroxy-4-(methylsulfonyl)-D-phenylalanine Ethyl Ester CAS 139164-32-2 chemical structure

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including (|AS)-N-Benzoyl-|A-hydroxy-4-(methylsulfonyl)-D-phenylalanine Ethyl Ester 139164-32-2 threo-N-Benzoyl-|A-hydroxy-4-(methylsulfonyl)-D-phenylalanine Ethyl Ester.

(|AS)-N-Benzoyl-|A-hydroxy-4-(methylsulfonyl)-D-phenylalanine Ethyl Ester 139164-32-2 threo-N-Benzoyl-|A-hydroxy-4-(methylsulfonyl)-D-phenylalanine Ethyl Ester (CAS 139164-32-2) is a high-purity analytical reference standard with the molecular formula C19H21NO6S and a molecular weight of 391.44 g/mol.

Based on its molecular formula C19H21NO6S, (|AS)-N-Benzoyl-|A-hydroxy-4-(methylsulfonyl)-D-phenylalanine Ethyl Ester 139164-32-2 threo-N-Benzoyl-|A-hydroxy-4-(methylsulfonyl)-D-phenylalanine Ethyl Ester contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 391.44 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.

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 FormulaC19H21NO6S
Molecular Weight391.44 g/mol
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)10.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1996
Nitrogen Atoms1
Sulfur Atoms1

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