7788-50-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7788-50-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,7,8 and 8 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 7788-50:
(6*7)+(5*7)+(4*8)+(3*8)+(2*5)+(1*0)=143
143 % 10 = 3
So 7788-50-3 is a valid CAS Registry Number.