136308-23-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 136308-23-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,6,3,0 and 8 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 136308-23:
(8*1)+(7*3)+(6*6)+(5*3)+(4*0)+(3*8)+(2*2)+(1*3)=111
111 % 10 = 1
So 136308-23-1 is a valid CAS Registry Number.
136308-23-1Relevant articles and documents
The efficient synthesis of N4-substituted 1-methylcytosines
Celewicz,Ciszewski,Golankiewicz
, p. 1489 - 1500 (1991)
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.
