7684-63-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7684-63-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,6,8 and 4 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 7684-63:
(6*7)+(5*6)+(4*8)+(3*4)+(2*6)+(1*3)=131
131 % 10 = 1
So 7684-63-1 is a valid CAS Registry Number.