166239-53-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 166239-53-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,6,2,3 and 9 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 166239-53:
(8*1)+(7*6)+(6*6)+(5*2)+(4*3)+(3*9)+(2*5)+(1*3)=148
148 % 10 = 8
So 166239-53-8 is a valid CAS Registry Number.