73847-55-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 73847-55-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,3,8,4 and 7 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 73847-55:
(7*7)+(6*3)+(5*8)+(4*4)+(3*7)+(2*5)+(1*5)=159
159 % 10 = 9
So 73847-55-9 is a valid CAS Registry Number.