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4-Fluorobutyrylfentanyl (also known as 4-FBF and p-FBF or para-fluorobutyrylfentanyl) is an opioid analgesic that is an analog of butyrfentanyl and has been sold online as a designer drug. [ 1 ] [ 2 ] It is closely related to 4-fluorofentanyl , which has an EC 50 value of 4.2 nM for the human μ-opioid receptor .
PubChem can be accessed for free through a web user interface. Millions of compound structures and descriptive datasets can be freely downloaded via FTP. PubChem contains multiple substance descriptions and small molecules with fewer than 100 atoms and 1,000 bonds. More than 80 database vendors contribute to the growing PubChem database. [2]
No description. Template parameters [Edit template data] Parameter Description Type Status 1 1 no description Unknown optional 2 2 no description Unknown optional The above documentation is transcluded from Template:PubChem/doc. (edit | history) Editors can experiment in this template's sandbox (create | mirror) and testcases (create) pages. Add categories to the /doc subpage. Subpages of this ...
In organic synthesis, PPTS is used as a weakly acidic catalyst, providing an organic soluble source of pyridinium (C 5 H 5 NH +) ions.For example, PPTS is used to deprotect silyl ethers or tetrahydropyranyl ethers when a substrate is unstable to stronger acid catalysts.
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A notable molecule editor is a computer program for creating and modifying representations of chemical structures. Molecule editors can manipulate chemical structure representations in either a simulated two-dimensional space or three-dimensional space , via 2D computer graphics or 3D computer graphics , respectively.