178613-81-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 178613-81-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,8,6,1 and 3 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 178613-81:
(8*1)+(7*7)+(6*8)+(5*6)+(4*1)+(3*3)+(2*8)+(1*1)=165
165 % 10 = 5
So 178613-81-5 is a valid CAS Registry Number.