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Toluene-4-sulfonic acid (S)-3-chloro-2-oxo-butyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

128913-31-5

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128913-31-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128913-31-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,9,1 and 3 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 128913-31:
(8*1)+(7*2)+(6*8)+(5*9)+(4*1)+(3*3)+(2*3)+(1*1)=135
135 % 10 = 5
So 128913-31-5 is a valid CAS Registry Number.

128913-31-5Upstream product

128913-31-5Downstream Products

128913-31-5Relevant academic research and scientific papers

Homochiral Group Transfer in Organic Synthesis via α-Diazocarbonyl Intermediates

Collins, Jeremiah C.,Dilworth, Bird M.,Garvey, Norah T.,Kennedy, Michael,McKervey, M. Anthony,O'Sullivan, Michael B.

, p. 362 - 364 (1990)

Optically active diazoketones derived from N-protected amino acids and (S)-2-chloropropionic acid have been used as homochiral group transfer reagents in the synthesis of various optically active α-functionalised ketones and related compounds.

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