331822-70-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 331822-70-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,3,1,8,2 and 2 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 331822-70:
(8*3)+(7*3)+(6*1)+(5*8)+(4*2)+(3*2)+(2*7)+(1*0)=119
119 % 10 = 9
So 331822-70-9 is a valid CAS Registry Number.
331822-70-9Relevant articles and documents
Synthesis of (5′S)-5′-C-alkyl-2′-deoxynucleosides
Trafelet, Huldreich,Stulz, Eugen,Leumann, Christian
, p. 87 - 105 (2007/10/03)
We describe the synthesis of (5′S)-5′-C-butylthymidine (5a), of the (5′S)-5′-C-butyl- and the (5′S)-5′-C-isopentyl derivatives 16a and 16b of 2′-deoxy-5-methylcytidine, as well as of the corresponding cyanoethyl phosphoramidites 9a,b and 14a,b, respective
