20951-24-0 Usage
Preparation
Preparation by Fries rearrangement of 4-(methylsulfonyl)- phenyl acetate with aluminium chloride without solvent at 120° (42%).
Check Digit Verification of cas no
The CAS Registry Mumber 20951-24-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,9,5 and 1 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 20951-24:
(7*2)+(6*0)+(5*9)+(4*5)+(3*1)+(2*2)+(1*4)=90
90 % 10 = 0
So 20951-24-0 is a valid CAS Registry Number.
InChI:InChI=1/C9H10O4S/c1-6(10)8-5-7(14(2,12)13)3-4-9(8)11/h3-5,11H,1-2H3