131887-65-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131887-65-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,8,8 and 7 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 131887-65:
(8*1)+(7*3)+(6*1)+(5*8)+(4*8)+(3*7)+(2*6)+(1*5)=145
145 % 10 = 5
So 131887-65-5 is a valid CAS Registry Number.