194159-22-3 Usage
Uses
Protected Valganciclovir, a pro-drug of ganciclovir.
Check Digit Verification of cas no
The CAS Registry Mumber 194159-22-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,4,1,5 and 9 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 194159-22:
(8*1)+(7*9)+(6*4)+(5*1)+(4*5)+(3*9)+(2*2)+(1*2)=153
153 % 10 = 3
So 194159-22-3 is a valid CAS Registry Number.
194159-22-3Relevant articles and documents
Preparation of ester of purine derivatives
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Page/Page column 7, (2008/06/13)
A process for the preparation of valganciclovir with triacetyl ganciclovir (V) as a starting material, comprising the following steps: selective hydrolysis, reacting with a coupling agent and a solvent, followed by hydrolysis under basic conditions and hydrogenolysis in the presence of a catalyst.