76784-81-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 76784-81-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,6,7,8 and 4 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 76784-81:
(7*7)+(6*6)+(5*7)+(4*8)+(3*4)+(2*8)+(1*1)=181
181 % 10 = 1
So 76784-81-1 is a valid CAS Registry Number.