90564-18-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 90564-18-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,5,6 and 4 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 90564-18:
(7*9)+(6*0)+(5*5)+(4*6)+(3*4)+(2*1)+(1*8)=134
134 % 10 = 4
So 90564-18-4 is a valid CAS Registry Number.