21612-49-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21612-49-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,6,1 and 2 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 21612-49:
(7*2)+(6*1)+(5*6)+(4*1)+(3*2)+(2*4)+(1*9)=77
77 % 10 = 7
So 21612-49-7 is a valid CAS Registry Number.