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191990-70-2

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191990-70-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 191990-70-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,1,9,9 and 0 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 191990-70:
(8*1)+(7*9)+(6*1)+(5*9)+(4*9)+(3*0)+(2*7)+(1*0)=172
172 % 10 = 2
So 191990-70-2 is a valid CAS Registry Number.

191990-70-2Relevant articles and documents

Selective Synthesis of Polyamine Derivatives: Efficient Derivatization of the Secondary Amino Group of N-Monosubstituted 1,3-Diamines

Jentgens, Christian,Hofmann, Richard,Guggisberg, Armin,Bienz, Stefan,Hesse, Manfred

, p. 966 - 978 (2007/10/03)

N-Monosubstituted 1,3-diamines were selectively functionalized at the secondary N-atom via 2-Ph-substituted hexahydropyrimidine intermediates. Reaction of the diamines with benzaldehyde, followed by treatment with an electrophile and hydrolysis, provided

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