1321950-56-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1321950-56-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,2,1,9,5 and 0 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1321950-56:
(9*1)+(8*3)+(7*2)+(6*1)+(5*9)+(4*5)+(3*0)+(2*5)+(1*6)=134
134 % 10 = 4
So 1321950-56-4 is a valid CAS Registry Number.