183745-81-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 183745-81-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,3,7,4 and 5 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 183745-81:
(8*1)+(7*8)+(6*3)+(5*7)+(4*4)+(3*5)+(2*8)+(1*1)=165
165 % 10 = 5
So 183745-81-5 is a valid CAS Registry Number.