6491-30-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 6491-30-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,4,9 and 1 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 6491-30:
(6*6)+(5*4)+(4*9)+(3*1)+(2*3)+(1*0)=101
101 % 10 = 1
So 6491-30-1 is a valid CAS Registry Number.