166833-74-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 166833-74-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,6,8,3 and 3 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 166833-74:
(8*1)+(7*6)+(6*6)+(5*8)+(4*3)+(3*3)+(2*7)+(1*4)=165
165 % 10 = 5
So 166833-74-5 is a valid CAS Registry Number.