267220-57-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 267220-57-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,6,7,2,2 and 0 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 267220-57:
(8*2)+(7*6)+(6*7)+(5*2)+(4*2)+(3*0)+(2*5)+(1*7)=135
135 % 10 = 5
So 267220-57-5 is a valid CAS Registry Number.