193959-87-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 193959-87-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,3,9,5 and 9 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 193959-87:
(8*1)+(7*9)+(6*3)+(5*9)+(4*5)+(3*9)+(2*8)+(1*7)=204
204 % 10 = 4
So 193959-87-4 is a valid CAS Registry Number.