213544-78-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 213544-78-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,3,5,4 and 4 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 213544-78:
(8*2)+(7*1)+(6*3)+(5*5)+(4*4)+(3*4)+(2*7)+(1*8)=116
116 % 10 = 6
So 213544-78-6 is a valid CAS Registry Number.