57764-67-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 57764-67-7 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, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 57764-67:
(7*5)+(6*7)+(5*7)+(4*6)+(3*4)+(2*6)+(1*7)=167
167 % 10 = 7
So 57764-67-7 is a valid CAS Registry Number.