187743-90-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 187743-90-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,7,7,4 and 3 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 187743-90:
(8*1)+(7*8)+(6*7)+(5*7)+(4*4)+(3*3)+(2*9)+(1*0)=184
184 % 10 = 4
So 187743-90-4 is a valid CAS Registry Number.