131973-40-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131973-40-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,9,7 and 3 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 131973-40:
(8*1)+(7*3)+(6*1)+(5*9)+(4*7)+(3*3)+(2*4)+(1*0)=125
125 % 10 = 5
So 131973-40-5 is a valid CAS Registry Number.