131721-75-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131721-75-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,7,2 and 1 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 131721-75:
(8*1)+(7*3)+(6*1)+(5*7)+(4*2)+(3*1)+(2*7)+(1*5)=100
100 % 10 = 0
So 131721-75-0 is a valid CAS Registry Number.