187242-57-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 187242-57-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,7,2,4 and 2 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 187242-57:
(8*1)+(7*8)+(6*7)+(5*2)+(4*4)+(3*2)+(2*5)+(1*7)=155
155 % 10 = 5
So 187242-57-5 is a valid CAS Registry Number.