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100559-91-9

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100559-91-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 100559-91-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,0,5,5 and 9 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 100559-91:
(8*1)+(7*0)+(6*0)+(5*5)+(4*5)+(3*9)+(2*9)+(1*1)=99
99 % 10 = 9
So 100559-91-9 is a valid CAS Registry Number.

100559-91-9Relevant articles and documents

Synthesis of N-Substituted Oxo- and Thioxopyrimidines from 1,2,4-Dithiazolium Salts

Holzer, Max,Dobner, Bodo,Briel, Detlef

, p. 895 - 900 (2007/10/02)

2,4-Diaryl-substituted 1,3-thiazine-5-carbonitriles 5, 6, obtained by reaction of 1,2,4-dithiazolium salts 1 with activated cyanoacetates, undergo ring transformations in the presence of primary and secondary amines.Thus, 5 and 6 react with primary amines under mild conditions to give hardly accessible N-3-substituted oxopyrimidine- or thioxopyrimidine-5-carbonitriles 11, 16, with secondary amines to give N-3-unsubstituted pyrimidine derivatives 14, 19 and with diamines to give imidazopyrimidines or pyrimidopyrimidines 23a, b.After alkylation of 1,3-thiazines 6, highly reactive 1,3-thiazinium salts 8 can be isolated. - Key Words: 1,3-Thiazines / Pyrimidines / Thiazinium salts

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