649761-21-7 Usage
Uses
(1R,5S)-5-?(Dimethylphenylsilyl?)?-?2-?(hydroxymethyl)?-2-?cyclopentene-?1-?carboxylic Acid is the intermediate of Entecavir (E558900), which is used in the treatment of hepatitis B infection. A guanine analogue that inhibits all three steps in the viral replication process.
Check Digit Verification of cas no
The CAS Registry Mumber 649761-21-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,9,7,6 and 1 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 649761-21:
(8*6)+(7*4)+(6*9)+(5*7)+(4*6)+(3*1)+(2*2)+(1*1)=197
197 % 10 = 7
So 649761-21-7 is a valid CAS Registry Number.
InChI:InChI=1/C15H22O3Si/c1-19(2,12-6-4-3-5-7-12)13-9-8-11(10-16)14(13)15(17)18/h3-8,13-18H,9-10H2,1-2H3/t13-,14-/m0/s1