28467-22-3 Usage
Preparation
Obtained by Fries rearrangement of 4,4′-diacetoxy-diphenylmethane, ? with aluminium chloride at 130–140° for 1 h (50%) ; ? with aluminium chloride and sodium chloride mixture at 140–150° for 4 h (28%).
Check Digit Verification of cas no
The CAS Registry Mumber 28467-22-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,4,6 and 7 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 28467-22:
(7*2)+(6*8)+(5*4)+(4*6)+(3*7)+(2*2)+(1*2)=133
133 % 10 = 3
So 28467-22-3 is a valid CAS Registry Number.
InChI:InChI=1/C17H16O4/c1-10(18)14-8-12(3-5-16(14)20)7-13-4-6-17(21)15(9-13)11(2)19/h3-6,8-9,20-21H,7H2,1-2H3
28467-22-3Relevant academic research and scientific papers
Crystallization-induced light-emission enhancement of diphenylmethane derivatives
Guieu, Samuel,Rocha, Jo?o,Silva, Artur M.S.
, p. 9329 - 9334 (2013/10/01)
A family of diphenylmethane derivatives has been synthesized and their luminescence properties characterized. While in solution the compounds are weakly emissive, showing no aggregation-induced emission enhancement, the crystals of three dialkyl 5,5′-methylenebis(2-hydroxybenzoate) samples exhibit intense emission. This emission enhancement upon crystallization is ascribed to particular molecular packing, which stiffens the structure of the compounds via hydrogen bonds, preventing consecutive π-π interactions.
