91555-67-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91555-67-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,5,5 and 5 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 91555-67:
(7*9)+(6*1)+(5*5)+(4*5)+(3*5)+(2*6)+(1*7)=148
148 % 10 = 8
So 91555-67-8 is a valid CAS Registry Number.