Cas 83143-34-4,3-Pyrrolidinone, 1-(phenylsulfonyl)-

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Check Digit Verification of cas no

The CAS Registry Mumber 83143-34-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,1,4 and 3 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 83143-34:
(7*8)+(6*3)+(5*1)+(4*4)+(3*3)+(2*3)+(1*4)=114
114 % 10 = 4
So 83143-34-4 is a valid CAS Registry Number.

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83143-34-4Relevant academic research and scientific papers

Gold-catalyzed synthesis of 3-pyrrolidinones and nitrones from N-sulfonyl hydroxylamines via oxygen-transfer redox and 1,3-sulfonyl migration

Yeom, Hyun-Suk,So, Eunsu,Shin, Seunghoon

, p. 1764 - 1767 (2011/04/16)

Golden touch: Gold-catalyzed reaction of N-sulfonyl hydroxylamines with terminal alkyne led to 3-pyrrolidinones by means of an oygen-transfer redox reaction. This protocol constitutes a direct method for forming α-amino carbonyl compounds. In sharp contrast, those with internal alkynes underwent 1,3-sulfonyl migration leading to 3-sulfonyl cyclic nitrones.

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