133983-56-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 133983-56-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,9,8 and 3 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 133983-56:
(8*1)+(7*3)+(6*3)+(5*9)+(4*8)+(3*3)+(2*5)+(1*6)=149
149 % 10 = 9
So 133983-56-9 is a valid CAS Registry Number.