783-87-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 783-87-9 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 7,8 and 3 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 783-87:
(5*7)+(4*8)+(3*3)+(2*8)+(1*7)=99
99 % 10 = 9
So 783-87-9 is a valid CAS Registry Number.