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In the first step, an N-phenyl-1,2-diaminobenzene (N-phenyl-o-phenylenediamine) is converted into a diazonium salt which instantaneously forms a 1,2,3-triazole. The triazole is unstable and at elevated temperatures, nitrogen is released and the carbazole is formed. [11] [12] Fluorescence of (9H-carbazol-9-yl)(2,4-dichlorophenyl) methanone
3-Amino-9-ethylcarbazole (AEC) is a chemical compound commonly used as a chromogenic substrate in immunohistochemistry, specifically for visualizing sections stained with HRP-conjugated secondary antibodies. [1]
For many years, the structure was assigned, incorrectly, as having a "linear structure" (EC no. 228-767-9, CAS RN 6358-30-1) which differ in terms of the carbazole ring fusion. [3] Pigment violet 23 is prepared by condensation of an aniline with chloranil. [4] Synthetic route to dioxazine dyes such as pigment violet 23.
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Odd molecular ion mass-to-charge ratio suggests existence of odd numbers of nitrogens. Nonetheless, molecular ion peaks are weak in aliphatic amines due to the ease of fragmentation next to amines. Alpha-cleavage reactions are the most important fragmentation mode for amines; for 1° n-aliphatic amines, there is an intense peak at m/z 30.
6-Formylindolo[3,2-b]carbazole (FICZ) is a chemical compound with the molecular formula C 19 H 12 N 2 O.It is a nitrogen heterocycle, having an extremely high affinity (K d = 7 x 10 −11 M) [1] [2] for binding to the aryl hydrocarbon receptor (AHR).
Structure of 1,2,3,4-butanetetracarboxylate, a low molecular weight polycarboxylate. Polycarboxylates are organic compounds with several carboxylic acid groups. Butane-1,2,3,4-tetracarboxylate is one example. Often, polycarboxylate refers to linear polymers with a high molecular mass (M r ≤ 100 000) and with many carboxylate groups.
Molar mass: 104.153 g·mol −1 Density: 1.03 g/cm 3 [1] Melting point: −28 °C (−18 °F; 245 K) Boiling point: 243 °C (469 °F; 516 K) Vapor pressure: