1388656-68-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1388656-68-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,8,8,6,5 and 6 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1388656-68:
(9*1)+(8*3)+(7*8)+(6*8)+(5*6)+(4*5)+(3*6)+(2*6)+(1*8)=225
225 % 10 = 5
So 1388656-68-5 is a valid CAS Registry Number.