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101989-67-7

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101989-67-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 101989-67-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,1,9,8 and 9 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 101989-67:
(8*1)+(7*0)+(6*1)+(5*9)+(4*8)+(3*9)+(2*6)+(1*7)=137
137 % 10 = 7
So 101989-67-7 is a valid CAS Registry Number.

101989-67-7Downstream Products

101989-67-7Relevant articles and documents

Novel Ring Transformations of 5-Cyanouracils into 2-Thiocytosines, 2,4-Diaminopyrimidines, and Pyrimidopyrimidines by the Reaction with Thioureas and Guanidines

Hirota, Kosaku,Sajiki, Hironao,Kitade, Yukio,Maki, Yoshifumi

, p. 123 - 128 (2007/10/02)

The reaction of 5-cyanouracils with thioureas and guanidines causes novel pyrimidine-to-pyrimidine ring transformations.Thus, 1,3-disubstituted 5-cyanouracils (1) react with thiourea and guanidines to give the corresponding 5-carbamoyl-2-thiocytosines (2)

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