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1022193-74-3

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1022193-74-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1022193-74-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,2,2,1,9 and 3 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1022193-74:
(9*1)+(8*0)+(7*2)+(6*2)+(5*1)+(4*9)+(3*3)+(2*7)+(1*4)=103
103 % 10 = 3
So 1022193-74-3 is a valid CAS Registry Number.

1022193-74-3Downstream Products

1022193-74-3Relevant articles and documents

PROCESS FOR THE MANUFACTURE OF CIS(-)-LAMIVUDINE

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Page/Page column 9-10, (2011/10/31)

An improved process for the manufacture of Lamivudine. The process involves: (a) resolution of racemic lamivudine (intermediate of formula IX) to cis (±) lamivudine of formula (XII) by forming a crystalline salt and separating the product from an organic solvent by fractional crystallization; (b) resolution of cis (±) lamivudine to cis (?) isomer involving formation of S-Binol adduct of formula XIV.

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