305805-18-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 305805-18-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,0,5,8,0 and 5 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 305805-18:
(8*3)+(7*0)+(6*5)+(5*8)+(4*0)+(3*5)+(2*1)+(1*8)=119
119 % 10 = 9
So 305805-18-9 is a valid CAS Registry Number.