111609-57-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 111609-57-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,1,6,0 and 9 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 111609-57:
(8*1)+(7*1)+(6*1)+(5*6)+(4*0)+(3*9)+(2*5)+(1*7)=95
95 % 10 = 5
So 111609-57-5 is a valid CAS Registry Number.
111609-57-5Relevant articles and documents
AZACYCLOALKANES. XXIX. SYNTHESIS OF 1-SUBSTITUTED 3,4-DIHYDROPYRROLOPYRAZINES
Likhosherstov, A. M.,Peresada, V. P.,Vinokurov, V. G.,Skoldinov, A. P.
, p. 2341 - 2345 (2007/10/02)
The reaction of 2-acylfurans with ethylenediamine is a general method for the production of 1-substituted 3,4-dihydropyrrolopyrazines.