649748-90-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 649748-90-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,9,7,4 and 8 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 649748-90:
(8*6)+(7*4)+(6*9)+(5*7)+(4*4)+(3*8)+(2*9)+(1*0)=223
223 % 10 = 3
So 649748-90-3 is a valid CAS Registry Number.