957491-81-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 957491-81-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,5,7,4,9 and 1 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 957491-81:
(8*9)+(7*5)+(6*7)+(5*4)+(4*9)+(3*1)+(2*8)+(1*1)=225
225 % 10 = 5
So 957491-81-5 is a valid CAS Registry Number.