1233193-50-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1233193-50-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,3,3,1,9 and 3 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1233193-50:
(9*1)+(8*2)+(7*3)+(6*3)+(5*1)+(4*9)+(3*3)+(2*5)+(1*0)=124
124 % 10 = 4
So 1233193-50-4 is a valid CAS Registry Number.
1233193-50-4Relevant articles and documents
NOVEL INTERMEDIATE AND PROCESS FOR PREPARING ENTECAVIR USING SAME
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, (2011/10/19)
The present invention relates to a novel, high-yield and low-cost method for preparing entecavir, [1-S-(1α,3α,4β)]-2-amino-1,9-dihydro-9-[4-hydroxy-3-(hydroxymethyl)-2-methylenecyclopentyl]-6H-purin-6-one, an antiviral agent, and novel intermediates used therein.
