211509-30-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 211509-30-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,1,5,0 and 9 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 211509-30:
(8*2)+(7*1)+(6*1)+(5*5)+(4*0)+(3*9)+(2*3)+(1*0)=87
87 % 10 = 7
So 211509-30-7 is a valid CAS Registry Number.