194920-87-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 194920-87-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,4,9,2 and 0 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 194920-87:
(8*1)+(7*9)+(6*4)+(5*9)+(4*2)+(3*0)+(2*8)+(1*7)=171
171 % 10 = 1
So 194920-87-1 is a valid CAS Registry Number.