218902-13-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 218902-13-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,8,9,0 and 2 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 218902-13:
(8*2)+(7*1)+(6*8)+(5*9)+(4*0)+(3*2)+(2*1)+(1*3)=127
127 % 10 = 7
So 218902-13-7 is a valid CAS Registry Number.