77872-16-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77872-16-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,8,7 and 2 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 77872-16:
(7*7)+(6*7)+(5*8)+(4*7)+(3*2)+(2*1)+(1*6)=173
173 % 10 = 3
So 77872-16-3 is a valid CAS Registry Number.