1856-69-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1856-69-5 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 9 respectively.
Calculate Digit Verification of CAS Registry Number 1856-69:
(6*1)+(5*8)+(4*5)+(3*6)+(2*6)+(1*9)=105
105 % 10 = 5
So 1856-69-5 is a valid CAS Registry Number.