77381-56-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77381-56-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,3,8 and 1 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 77381-56:
(7*7)+(6*7)+(5*3)+(4*8)+(3*1)+(2*5)+(1*6)=157
157 % 10 = 7
So 77381-56-7 is a valid CAS Registry Number.