213540-41-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 213540-41-1 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 0 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 213540-41:
(8*2)+(7*1)+(6*3)+(5*5)+(4*4)+(3*0)+(2*4)+(1*1)=91
91 % 10 = 1
So 213540-41-1 is a valid CAS Registry Number.