51940-33-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 51940-33-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,1,9,4 and 0 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 51940-33:
(7*5)+(6*1)+(5*9)+(4*4)+(3*0)+(2*3)+(1*3)=111
111 % 10 = 1
So 51940-33-1 is a valid CAS Registry Number.
51940-33-1Relevant articles and documents
8-Alkyl-5-oxo-5,8-dihydro-pyrido(2,3-d)pyrimidine-6-carboxylic acids and their preparation
-
, (2008/06/13)
Valuable antibacterial 8-alkyl-5-oxo-5,8-dihydro-pyrido(2,3-d)pyrimidine-6-carboxylic acids, some of which are new compounds, are made from corresponding pyrimidines by a process involving condensation with an amino-ester, cyclization, halogenation, dehydrohalogenation, and saponification.