57764-90-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 57764-90-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,7,6 and 4 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 57764-90:
(7*5)+(6*7)+(5*7)+(4*6)+(3*4)+(2*9)+(1*0)=166
166 % 10 = 6
So 57764-90-6 is a valid CAS Registry Number.