212909-88-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 212909-88-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,2,9,0 and 9 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 212909-88:
(8*2)+(7*1)+(6*2)+(5*9)+(4*0)+(3*9)+(2*8)+(1*8)=131
131 % 10 = 1
So 212909-88-1 is a valid CAS Registry Number.