The CAS Registry Mumber 218453-51-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,8,4,5 and 3 respectively; the second part has 2 digits, 5 and 1 respectively. Calculate Digit Verification of CAS Registry Number 218453-51: (8*2)+(7*1)+(6*8)+(5*4)+(4*5)+(3*3)+(2*5)+(1*1)=131 131 % 10 = 1 So 218453-51-1 is a valid CAS Registry Number.
Get Best Price for218453-51-1Trifluoro-methanesulfonic acid (4aS,5R,6R,8aS)-5,6,8a-trimethyl-5-(2-triisopropylsilanyloxy-ethyl)-3,4,4a,5,6,7,8,8a-octahydro-naphthalen-1-yl ester