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Pyrrole–imidazole polyamides (PIPs) are a class of polyamides have the ability to bind to minor grooves found in the DNA helix. [ 1 ] [ 2 ] Scientists are experimenting with it as a drug-delivery mode that can switch genes on and off, as well as epigenetic modification in gene therapy .
Pyrrole is an extremely weak base for an amine, with a conjugate acid pK a of −3.8. The most thermodynamically stable pyrrolium cation (C 4 H 6 N +) is formed by protonation at the 2 position. Substitution of pyrrole with alkyl substituents provides a more basic molecule—for example, tetramethylpyrrole has a conjugate acid pK a of +3.7.
Patients with chronic (rather than acute) pain may respond to analgesia differently. Repeated administration of a medication is also different from single dosing, as many drugs have active metabolites that can build up in the body. [6] Patient variables such as sex, age, and organ function may also influence the effect of the drug on the system.
Imidazole is a planar 5-membered ring, that exists in two equivalent tautomeric forms because hydrogen can be bound to one or another nitrogen atom. Imidazole is a highly polar compound, as evidenced by its electric dipole moment of 3.67 D, [12] and is highly soluble in water.
As a new drug under patent, VX-548 is bound to be much more expensive than generic versions of Vicodin, and its main selling point seems to be based on a gross exaggeration of that familiar drug's ...
Zomepirac is the sodium salt of 5-(4-chlorobenzoyl)-1,4 dimethyl-1H-pyrrole-2-acetate dihydrate. It is a pyrrole - acetic acid which is structurally related to tolmetin . The chemical structure differs from other NSAIDs in that the central benzene ring has been replaced by a pyrrole.
Naphthoylpyrroles: Any compound containing a 3-(1-naphthoyl)pyrrole structure with substitution at the nitrogen atom of the pyrrole ring by an alkyl, haloalkyl, alkenyl, cycloalkylmethyl, cycloalkylethyl, 1-(N-methyl-2-piperidinyl)methyl, or 2-(4-morpholinyl)ethyl group whether or not further substituted in the pyrrole ring to any extent and ...
This is a list of fentanyl analogues (sometimes referred to as Fentalogs), [1] [2] [3] including both compounds developed by pharmaceutical companies for legitimate medical use, and those which have been sold as designer drugs and reported to national drug control agencies such as the DEA, or transnational agencies such as the EMCDDA and UNODC.