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187796-57-2

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187796-57-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 187796-57-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,7,7,9 and 6 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 187796-57:
(8*1)+(7*8)+(6*7)+(5*7)+(4*9)+(3*6)+(2*5)+(1*7)=212
212 % 10 = 2
So 187796-57-2 is a valid CAS Registry Number.

187796-57-2Downstream Products

187796-57-2Relevant articles and documents

Regio- and stereo-selective additions of sodium selenides to conjugate enyne sulfones: A convenient synthesis of 4-seleno-1-sulfonylbuta-1,3-dienes

Yoshimatsu, Mitsuhiro,Hasegawa, Junko

, p. 211 - 215 (2007/10/03)

Addition of PhSeNa to the conjugate enyne sulfones 1, 11-18 occurred at the δ-position of the sulfonyl group to give the 4-phenylseleno-1-sulfonylbuta-1,3-dienes 10, 19-22, 24, 25 and 27 regio- and stereo-selectively.

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