1784429-31-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1784429-31-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,7,8,4,4,2 and 9 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1784429-31:
(9*1)+(8*7)+(7*8)+(6*4)+(5*4)+(4*2)+(3*9)+(2*3)+(1*1)=207
207 % 10 = 7
So 1784429-31-7 is a valid CAS Registry Number.