187174-42-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 187174-42-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,7,1,7 and 4 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 187174-42:
(8*1)+(7*8)+(6*7)+(5*1)+(4*7)+(3*4)+(2*4)+(1*2)=161
161 % 10 = 1
So 187174-42-1 is a valid CAS Registry Number.