671786-56-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 671786-56-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,7,1,7,8 and 6 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 671786-56:
(8*6)+(7*7)+(6*1)+(5*7)+(4*8)+(3*6)+(2*5)+(1*6)=204
204 % 10 = 4
So 671786-56-4 is a valid CAS Registry Number.