423177-16-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 423177-16-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,2,3,1,7 and 7 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 423177-16:
(8*4)+(7*2)+(6*3)+(5*1)+(4*7)+(3*7)+(2*1)+(1*6)=126
126 % 10 = 6
So 423177-16-6 is a valid CAS Registry Number.