1784285-89-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1784285-89-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,7,8,4,2,8 and 5 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1784285-89:
(9*1)+(8*7)+(7*8)+(6*4)+(5*2)+(4*8)+(3*5)+(2*8)+(1*9)=227
227 % 10 = 7
So 1784285-89-7 is a valid CAS Registry Number.