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  • (βS)-N-Benzoyl-β-hydroxy-4-(methylsulfonyl)-D-phenylalanine Ethyl Ester

    Cas No: 139164-32-2

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139164-32-2 Usage

Chemical Properties

White Solid

Check Digit Verification of cas no

The CAS Registry Mumber 139164-32-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,1,6 and 4 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 139164-32:
132 % 10 = 2
So 139164-32-2 is a valid CAS Registry Number.



According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 11, 2017

Revision Date: Aug 11, 2017


1.1 GHS Product identifier

Product name ethyl L-threo-N-benzoyl-3-(4-methylsulphonylphenyl)serinate

1.2 Other means of identification

Product number -
Other names (BetaS)-N-Benzoyl-Beta-hydroxy-4-(methylsulfonyl)-D-phenylalanine Ethyl Ester

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:139164-32-2 SDS

139164-32-2Relevant articles and documents

Preparation method of (2S, 3R)-p-methylsulfonylphenyl serine ethyl ester


Paragraph 0016; 0020; 0021, (2021/02/06)

The invention provides a preparation method of (2S, 3R)-p-methylsulfonylphenyl serine ethyl ester. The preparation method comprises the following steps: dissolving p-methylsulfonyl benzaldehyde and 2-halogenated ethyl acetate serving as raw materials in a solvent A to prepare (2R, 3R)-2-halogen-3-hydroxy-3-(4-methylsulfonyl) phenyl ethyl propionate under the action of a catalyst A, substituting halogen atoms with azide, and performing catalytic hydrogenation reduction to prepare (2S, 3R)-p-methylsulfonyl phenyl serine ethyl ester; or using p-methylsulfonyl benzaldehyde and 2-halogenated ethylacetate as raw materials and dissolving in a solvent B, and preparing (2S, 3S)-2-halogen-3-hydroxy-3-(4-methylsulfonyl) phenyl ethyl propionate under the action of a catalyst B, substituting halogen atoms with benzamide, and preparing (2S, 3R)-p-methylsulfonyl phenyl serine ethyl ester through cyclization, configuration transformation and hydrolysis. The preparation method is high in product purity and high in yield.

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