830321-55-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 830321-55-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,3,0,3,2 and 1 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 830321-55:
(8*8)+(7*3)+(6*0)+(5*3)+(4*2)+(3*1)+(2*5)+(1*5)=126
126 % 10 = 6
So 830321-55-6 is a valid CAS Registry Number.
830321-55-6Relevant articles and documents
Heterocyclic Studies. Part 42. Pyrimidotriazines and some Related Tricyclic Compounds
Clark, Jim,Varvounis, George
, p. 1475 - 1481 (2007/10/02)
Nitrous acid treatment of 2,4-disubstituted 6-methyl-5-nitropyrimidines gave the corresponding pyrimidotriazine 3-oxides.The latter reacted with thionyl chloride to give 4-chloro derivatives which were then converted into other 4-substituted