1784331-41-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1784331-41-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,7,8,4,3,3 and 1 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1784331-41:
(9*1)+(8*7)+(7*8)+(6*4)+(5*3)+(4*3)+(3*1)+(2*4)+(1*1)=184
184 % 10 = 4
So 1784331-41-4 is a valid CAS Registry Number.