13909-71-2 Usage
Preparation
Preparation by Fries rearrangement of 2,5-dimethoxyphenyl acetate with aluminium chloride.
Check Digit Verification of cas no
The CAS Registry Mumber 13909-71-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,9,0 and 9 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 13909-71:
(7*1)+(6*3)+(5*9)+(4*0)+(3*9)+(2*7)+(1*1)=112
112 % 10 = 2
So 13909-71-2 is a valid CAS Registry Number.