212909-15-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 212909-15-4 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, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 212909-15:
(8*2)+(7*1)+(6*2)+(5*9)+(4*0)+(3*9)+(2*1)+(1*5)=114
114 % 10 = 4
So 212909-15-4 is a valid CAS Registry Number.