155983-98-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 155983-98-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,5,9,8 and 3 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 155983-98:
(8*1)+(7*5)+(6*5)+(5*9)+(4*8)+(3*3)+(2*9)+(1*8)=185
185 % 10 = 5
So 155983-98-5 is a valid CAS Registry Number.