1856-67-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1856-67-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,8,5 and 6 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1856-67:
(6*1)+(5*8)+(4*5)+(3*6)+(2*6)+(1*7)=103
103 % 10 = 3
So 1856-67-3 is a valid CAS Registry Number.