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82721-83-3

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82721-83-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 82721-83-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,2,7,2 and 1 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 82721-83:
(7*8)+(6*2)+(5*7)+(4*2)+(3*1)+(2*8)+(1*3)=133
133 % 10 = 3
So 82721-83-3 is a valid CAS Registry Number.

82721-83-3Relevant articles and documents

Reactions of amines with β-(phenylseleninyl)vinyl sulfones derived from the selenosulfonation of acetylenes. Formation of enamine sulfones

Back, Thomas G.,Collins, Scott,Law, Kwok-Wai

, p. 2313 - 2318 (2007/10/02)

β-(Phenylseleno)vinyl sulfones 2 were prepared from the selenosulfonation of acetylenes and were oxidized to the corresponding selenoxides 3.These were treated in situ with morpholine (4) or pyrrolidine (5) to afford the corresponding enamine sulfones 6 a

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