7567-67-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7567-67-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,5,6 and 7 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 7567-67:
(6*7)+(5*5)+(4*6)+(3*7)+(2*6)+(1*7)=131
131 % 10 = 1
So 7567-67-1 is a valid CAS Registry Number.