6749-87-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 6749-87-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,7,4 and 9 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 6749-87:
(6*6)+(5*7)+(4*4)+(3*9)+(2*8)+(1*7)=137
137 % 10 = 7
So 6749-87-7 is a valid CAS Registry Number.
6749-87-7Relevant articles and documents
N-Alkylation of Cytosine and Its Nucleosides with Trialkyl Phosphates
Hayashi, Masahiro,Yamauchi, Kiyoshi,Kinoshita, Masayoshi
, p. 277 - 278 (1980)
Cytosine has been readily alkylated with trialkyl phosphates to give the corresponding N-alkyl derivatives, trimethyl phosphate being especially useful for the N-methylation of the base moiety of cytosine nucleosides.