67381-91-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 67381-91-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,7,3,8 and 1 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 67381-91:
(7*6)+(6*7)+(5*3)+(4*8)+(3*1)+(2*9)+(1*1)=153
153 % 10 = 3
So 67381-91-3 is a valid CAS Registry Number.