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148493-16-7

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148493-16-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 148493-16-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,8,4,9 and 3 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 148493-16:
(8*1)+(7*4)+(6*8)+(5*4)+(4*9)+(3*3)+(2*1)+(1*6)=157
157 % 10 = 7
So 148493-16-7 is a valid CAS Registry Number.

148493-16-7SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 20, 2017

Revision Date: Aug 20, 2017

1.Identification

1.1 GHS Product identifier

Product name (S)-2-Methyl-4-oxopentanoic acid

1.2 Other means of identification

Product number -
Other names 3-(S-acetyl)-2S-methylpropionic acid

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:148493-16-7 SDS

148493-16-7Relevant articles and documents

A new chiral alkylation methodology for the synthesis of 2-alkyl-4-ketoacids in high optical purity using 2-triflyloxy esters

Hoffman, Robert V.,Kim, Hwa-Ok

, p. 2051 - 2054 (1993)

Optical active 2-triflyloxy esters are excellent alkylating agents for β-ketoester enolates. Decarboxylation of the alkylation products gives 2-substituted-4-ketoacid derivatives in high optical purities.

The Stereoselective Synthesis of 2-Alkyl γ-Keto Acid and Heterocyclic Ketomethylene Peptide Isostere Core Units Using Chiral Alkylation by 2-Triflyloxy Esters

Hoffman, Robert V.,Kim, Hwa-Ok

, p. 5107 - 5113 (2007/10/02)

A simple and general protocol for the enentioselective preparation of γ-keto acids and heterocyclic γ-keto acids which have an alkyl group at C-2 is reported.The alkyl group is introduced by chiral alkylation using a scalemic 2-triflyoxy ester.The alkylation takes place with inversion of configuration and is compatible with a variety of alkyl groups.This methodology is thus wellsuited for the preparation of a wide variety of ketomethylene peptide isosteres.

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