181313-25-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 181313-25-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,1,3,1 and 3 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 181313-25:
(8*1)+(7*8)+(6*1)+(5*3)+(4*1)+(3*3)+(2*2)+(1*5)=107
107 % 10 = 7
So 181313-25-7 is a valid CAS Registry Number.