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138563-55-0

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138563-55-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 138563-55-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,5,6 and 3 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 138563-55:
(8*1)+(7*3)+(6*8)+(5*5)+(4*6)+(3*3)+(2*5)+(1*5)=150
150 % 10 = 0
So 138563-55-0 is a valid CAS Registry Number.

138563-55-0Relevant articles and documents

Development of an Industrial Process Based on the Groebke-Blackburn-Bienaymé Multicomponent Reaction: Efficient Preparation- of 3-Aminoimidazo[1,2-a]pyrazines

Baenziger, Markus,Durantie, Estelle,Mathes, Christian

supporting information, p. 2266 - 2274 (2017/05/05)

3-Aminoimidazo[1,2-a]pyrazine is an important scaffold that is found in many drugs. This scaffold is rapidly accessible through a Groebke-Blackburn-Bienaymé cyclisation starting from an aminopyrazine, an aldehyde and an isocyanide. A scale-up process of this multicomponent reaction has been achieved in high yield and with excellent purity. The scope and limitations of this process leading to various 3-aminoimidazo[1,2-a]pyrazines are disclosed.

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