131715-56-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131715-56-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,7,1 and 5 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 131715-56:
(8*1)+(7*3)+(6*1)+(5*7)+(4*1)+(3*5)+(2*5)+(1*6)=105
105 % 10 = 5
So 131715-56-5 is a valid CAS Registry Number.