333335-47-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 333335-47-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,3,3,3,3 and 5 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 333335-47:
(8*3)+(7*3)+(6*3)+(5*3)+(4*3)+(3*5)+(2*4)+(1*7)=120
120 % 10 = 0
So 333335-47-0 is a valid CAS Registry Number.
333335-47-0Relevant articles and documents
Regioselective alkylation of guanines using 2-acetoxytetrahydrofurans
Geen, Graham R.,Kincey, Peter M.,Spoors, P. Grant
, p. 1781 - 1784 (2001)
Reaction of silylated guanine derivatives with 2-acetoxy-4-benzoyloxymethyltetrahydrofuran in DMF or NMP resulted in selective N-9 alkylation. This was used as the basis for a regioselective synthesis of the anti-viral agents famciclovir and penciclovir.
