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177938-42-0

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177938-42-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 177938-42-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,7,9,3 and 8 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 177938-42:
(8*1)+(7*7)+(6*7)+(5*9)+(4*3)+(3*8)+(2*4)+(1*2)=190
190 % 10 = 0
So 177938-42-0 is a valid CAS Registry Number.

177938-42-0Relevant articles and documents

Synthesis of 1,3,5-triazine derivatives by the reaction of S,S '-dimethyl N-cyanocarbonimidodithioate with amides

Kohra, Shinya,Ueda, Kazuo,Tominaga, Yoshinori

, p. 839 - 849 (1996)

S ,S '-Dimethyl N-cyanocarbonimidodithioate (1) reacted with amides (2) in the presence of sodium hydride in a mixture of benzene and N,N-dimethylacetamide to give the corresponding N-acyl-N'-carbamoyl-S-methylisothioureas (3). Refluxing of 3 in methanol gave the corresponding cyclized product, 1,3,5-triazin-2(1H)-one derivatives (4). Compounds (4) were found to be useful intermediates for the synthesis of trisubstituted 1,3,5-triazines.

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