28734-80-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 28734-80-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,7,3 and 4 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 28734-80:
(7*2)+(6*8)+(5*7)+(4*3)+(3*4)+(2*8)+(1*0)=137
137 % 10 = 7
So 28734-80-7 is a valid CAS Registry Number.
28734-80-7Relevant academic research and scientific papers
The efficient synthesis of N4-substituted 1-methylcytosines
Celewicz,Ciszewski,Golankiewicz
, p. 1489 - 1500 (2007/10/02)
An improved procedure for the preparation of 4-chloro-1,2-dihydro-1-methyl-2-oxopyrimidine is described. This compound appeared to be an excellent substrate for the synthesis of N4-substituted 1-methylcytosines.
