159983-78-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 159983-78-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,9,9,8 and 3 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 159983-78:
(8*1)+(7*5)+(6*9)+(5*9)+(4*8)+(3*3)+(2*7)+(1*8)=205
205 % 10 = 5
So 159983-78-5 is a valid CAS Registry Number.