137897-89-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 137897-89-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,8,9 and 7 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 137897-89:
(8*1)+(7*3)+(6*7)+(5*8)+(4*9)+(3*7)+(2*8)+(1*9)=193
193 % 10 = 3
So 137897-89-3 is a valid CAS Registry Number.
InChI:InChI=1/C18H24N2O3S2/c1-11(2)15-16(22)19-18(24)20(10-23-6-5-21)17(15)25-14-8-12(3)7-13(4)9-14/h7-9,11,21H,5-6,10H2,1-4H3,(H,19,22,24)
137897-89-3Relevant articles and documents
Pyrimidine nucleoside derivative and antiviral agent containing the derivative as active ingredient
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, (2008/06/13)
A pyrimidine nucleoside derivative and pharmaceutically acceptable salt thereof specified by the presence of ethyl group or isopropyl group at 5-position of the pyrimidine ring and the presence of a (substituted) phenylthio or a (substituted) benzyl group