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639007-38-8

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639007-38-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 639007-38-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,3,9,0,0 and 7 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 639007-38:
(8*6)+(7*3)+(6*9)+(5*0)+(4*0)+(3*7)+(2*3)+(1*8)=158
158 % 10 = 8
So 639007-38-8 is a valid CAS Registry Number.

639007-38-8Downstream Products

639007-38-8Relevant articles and documents

Reaction of different α-sulfonyl acetamides with methyl acrylate

Chang, Meng-Yang,Chen, Shui-Tein,Chang, Nein-Chen

, p. 5075 - 5080 (2002)

The base-induced tandem-coupling/cyclization reactions of various α-sulfonyl acetamide derivatives A with methyl acrylate differentiated between two different pathways to form α-sulfonyl analogs of glutarimides B and 2-hydroxycyclohexenecarboxylic acid derivatives C in different ratios. The reaction of α-sulfonyl acetamide dianion with methyl acrylate depended on three factors: the stability of the dianion, concentration of methyl acrylate and the structure of sufonyl and amide substituents. By changing the reaction conditions, we efficiently controlled the cycloaddition reaction to synthesize the desired product, each of which has potential biological activities. A ring closure mechanism is proposed for the reactions.

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