1218810-51-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1218810-51-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,1,8,8,1 and 0 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1218810-51:
(9*1)+(8*2)+(7*1)+(6*8)+(5*8)+(4*1)+(3*0)+(2*5)+(1*1)=135
135 % 10 = 5
So 1218810-51-5 is a valid CAS Registry Number.