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Cyclopentanecarboxylic acid is an organic compound with the formula C 5 H 9 CO 2 H. It is a colorless nonvolatile oil. It is a colorless nonvolatile oil. It can be produced by the palladium -catalyzed hydrocarboxylation of cyclopentene : [ 2 ]
Examples include 2-pentyl- and 2-heptylcyclopentanone. [4] It is a versatile synthetic intermediate, being a precursor to cyclopentobarbital. [5] Cyclopentobarbital, a drug made from cyclopentanone. Cyclopentanone is also used to make cyclopentamine, the pesticide pencycuron, and pentethylcyclanone. [5]
One of the routes involves elimination of α-bromo-cyclopentanone using lithium carbonate [2] and Claisen condensation-decarboxylation-isomerization cascades of unsaturated diesters as shown below. [3] Industrial synthesis of cyclopentenone. The acid-catalyzed dehydration of cyclopentanediols affords cyclopentenone. [4]
Gelatin capsules, informally called gel caps or gelcaps, are composed of gelatin manufactured from the collagen of animal skin or bone. [4] Vegetable capsules, introduced in 1989, [5] are made from cellulose, a structural component in plants. The main ingredient of vegetarian capsules is hydroxypropyl methyl cellulose. In the 21st century ...
For this reason, producers of drugs such as OTC analgesics wanting to emphasize the strength of their product developed the "caplet", a portmanteau [6] of capsule-shaped tablet, [7] [8] in order to tie this positive association to more efficiently produced tablet pills as well as being an easier-to-swallow shape than the usual disk-shaped tablet.
[2] As of early 1990s, it was present in American [3] and European [4] gasoline in small amounts, and by 2011 its share in US gasoline varied between 1 and 3%. [5] It has a research octane number of 103 and motor octane number of 95. [6] The C 6 core of methylcyclopentane is not perfectly planar and can pucker to alleviate stress in its ...
tert-Amyl alcohol (TAA) or 2-methylbutan-2-ol (2M2B), is a branched pentanol. Historically, TAA has been used as an anesthetic [ 3 ] and more recently as a recreational drug . [ 4 ] TAA is mostly a positive allosteric modulator for GABA A receptors in the same way as ethanol . [ 5 ]
2-Pentanone or methyl propyl ketone (MPK) is a ketone and solvent of minor importance. It is comparable to methyl ethyl ketone , but has a lower solvency and is more expensive. [ 5 ] It occurs naturally in Nicotiana tabacum (Tobacco) [ 6 ] and blue cheese as a metabolic product of Penicillium mold growth.