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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.
Decabromodiphenyl ethane is a chemical compound used as a brominated flame retardant.It was commercialised in the 1990s as an alternative for decabromodiphenyl ether, [1] following safety concern over that compound.
Pentafluoropropane is produced by Honeywell and in Asia by Sinochem. [8] Honeywell markets HFC-245fa under the Enovate and Genetron 245fa brand names. AlliedSignal, who adopted the Honeywell name after acquiring it, decided in 1999 to provide a non ozone depleting blowing agent as an alternative for dichlorofluoroethane (HCFC-141b) and trichlorofluoromethane (CFC-11).
NO: nitrogen monoxide: 10102–43–9 NO 2: nitrogen dioxide: 10102–44–0 N 2: nitrogen: 7727-37-9 [1] N 2 F 2: dinitrogen difluoride: 13812–43–6 N 2 F 4: dinitrogen tetrafluoride: 10036–47–2 N 2 O: dinitrogen monoxide: 10024–97–2 N 2 O 3: dinitrogen trioxide: 10544–73–7 N 2 O 4: dinitrogen tetroxide: 10544–72–6 N 2 O 5 ...
Screenshot of the CAS Common Chemistry database with information about caffeine ().. A CAS Registry Number [1] (also referred to as CAS RN [2] or informally CAS Number) is a unique identification number, assigned by the Chemical Abstracts Service (CAS) in the US to every chemical substance described in the open scientific literature, in order to index the substance in the CAS Registry.
Different CAS Registry Numbers [1] are used for each form of a substance. For example, something simple like alanine will have one CAS# for the D form, another for L, another for "unspecified" and a fourth one for racemic. There would be another four CAS#s for the hydrochloride, four for the (1:1) sulfate, four for the (2:1)sulfate, etc.
1 These actions will only prove to exacerbate the problems in the years to come because we will later find out that the Fed transferred market risks from market players to tax payers. Granted they may be issuing loans against assets, but with regulatory changes permitting reclassifications of debt instruments you can expect off-balance
trans-1,3,3,3-Tetrafluoropropene (HFO-1234ze(E), R-1234ze(E)) is a hydrofluoroolefin. It was developed as a "fourth generation" refrigerant to replace fluids such as R-134a , as a blowing agent for foam and aerosol applications, and in air horns and gas dusters . [ 3 ]