7678-38-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7678-38-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,6,7 and 8 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 7678-38:
(6*7)+(5*6)+(4*7)+(3*8)+(2*3)+(1*8)=138
138 % 10 = 8
So 7678-38-8 is a valid CAS Registry Number.