227176-38-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 227176-38-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,7,1,7 and 6 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 227176-38:
(8*2)+(7*2)+(6*7)+(5*1)+(4*7)+(3*6)+(2*3)+(1*8)=137
137 % 10 = 7
So 227176-38-7 is a valid CAS Registry Number.
227176-38-7Relevant articles and documents
A new approach to 5H-pyrrolo[3,2-d]pyrimidines (9-deazapurines) from 3- aminopyrrole-2-carboxylates
Selic?, Lovro,Stanovnik, Branko
, p. 1087 - 1092 (2007/10/03)
3-Amino-4-ethoxycarbonyl-1-methyl-1H-pyrrole-2-carboxylate (2) was used to prepare 9-deazapurines in a single step reaction.
