845663-74-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 845663-74-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,4,5,6,6 and 3 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 845663-74:
(8*8)+(7*4)+(6*5)+(5*6)+(4*6)+(3*3)+(2*7)+(1*4)=203
203 % 10 = 3
So 845663-74-3 is a valid CAS Registry Number.