All articles starting with P
28,818 articles
Phenylketonuria
Phenylketonuria (PKU), also Fölling disease, an autosomal recessive PAH-gene disorder causing phenylalanine buildup; treated by Phe-restricted diet, sapropterin, pegvaliase, and sepiapterin, detected by Guthrie newborn screening.
Phenylpiracetam
Phenylpiracetam (fonturacetam, carphedon, Phenotropil) is a Soviet-developed 1980 phenyl analog of piracetam, registered in Russia in 2003, more potent than piracetam, and the only racetam on the WADA prohibited stimulant list since 1998.
Phenylpropanolamine
Phenylpropanolamine, also known as norephedrine, is a sympathomimetic amine formerly used as a nasal decongestant and appetite suppressant, withdrawn from US drugs in 2000 after a study linked it to hemorrhagic stroke.
Phenylsilane
Phenylsilane is an organosilicon compound, a colorless volatile liquid with three silicon–hydrogen bonds, used in organic synthesis as a mild reducing agent, hydride donor, and precursor to polysilanes.
Phenylthiocarbamide
Phenylthiocarbamide (PTC, phenylthiourea), a synthetic bitter compound whose bimodal tasting ability, controlled by TAS2R38 variants, made it a classic human Mendelian trait discovered in 1931.
Phenylthiohydantoin
Phenylthiohydantoin, or PTH, is a thiohydantoin bearing a phenyl group whose amino acid derivatives are the end products of Edman degradation, identified by HPLC to sequence peptides.
Phenylurea
Phenylurea, also known as N-phenylurea or phenylcarbamide, is the simplest N-substituted urea, a white crystalline solid also giving its name to a family of herbicides including diuron.
Phenytoin
Phenytoin, also called diphenylhydantoin and originally sold as Dilantin, is a hydantoin-derivative anticonvulsant introduced in 1938 that controls tonic-clonic and focal seizures and is used after neurosurgery.
Pheochromocytoma
Pheochromocytoma is a rare catecholamine-producing tumor of the adrenal medulla, the inner adrenal gland, causing hypertension, headaches, sweating, and palpitations; about 35% are hereditary, and surgery after alpha-blockade is the mainstay treatment.
Pheochromocytoma and paraganglioma–induced hypertension
Pheochromocytoma and paraganglioma–induced hypertension (PPGL) is high blood pressure caused by catecholamine-secreting neuroendocrine tumors, which release norepinephrine and epinephrine and range from sudden crises to sustained hypertension.
Pheon Therapeutics
Pheon Therapeutics is a London-based clinical-stage biotechnology company developing antibody-drug conjugates for solid cancers. A King's College London spinout launched in 2022, it has raised over $188 million.
Pher G. Andersson
Pher G. Andersson is a Swedish organic chemist, professor of organic chemistry at Stockholm University since 2013, known for iridium-catalyzed asymmetric hydrogenation and a Fulbright stay with K. Barry Sharpless at Scripps.
Phera (2026 film)
Phera (ফেরা), 2026 Bengali drama directed by Pritha Chakraborty, starring Sanjay Mishra in his Bengali debut as Pannalal and Ritwick Chakraborty as son Palash; released 29 May 2026 by Nandy Movies, 139 minutes, UA 13+.
Pheradi Maius
Pheradi Maius (Pheradi Majus, Fradis, Sidi Khlifa) is a 40-hectare ancient city site in Bouficha, Tunisia, pre-Roman in origin, a Roman municipium with two forums, a nymphaeum, and an amphitheater, abandoned in the 7th century.
Pherai
Pherai (Φεραί, Latin Pherae) was an ancient Greek city in eastern Thessaly at modern Velestino, a leading city whose 4th-century BC tyrants sought to rule Thessaly.
Pherecydes of Syros
Pherecydes of Syros, fl. c. 544 BCE, reputed first writer of Greek prose, author of the theogony-cosmogony Pentemychos with three eternal principles Zas, Chronos, Chthonie, the Zas-Chthonie wedding, winged tree, Cronus-Ophioneus battle, and Pythagoras link.
Pherendates
Pherendates, called Farandata in Egyptian texts, was the Achaemenid satrap of Egypt under Darius I, known from demotic letters of 493–492 BC to the priests of Khnum at Elephantine.
Pherendates II
Pherendates II was a Persian installed as satrap (governor) of Egypt at Memphis by Artaxerxes III after the Achaemenid reconquest of 343 BC, during the Second Persian Period.
Pherodim
Pherodim, a pesticide active substance with EU ID 975, is not approved for use in the European Union; it is listed in the EU Pesticides Database among non-approved substances, with no CAS number recorded.
Pheromone
Pheromone: chemical released by an organism that triggers responses in same-species members; term coined by Karlson and Lüscher (1959); first identified as bombykol; no confirmed human pheromone; used in insect pest control.
Pheromone biosynthesis activating neuropeptide
Pheromone biosynthesis activating neuropeptide (PBAN), also called pyrokinin/PBAN family peptide, is a 33–34 amino acid insect neuropeptide from the subesophageal ganglion that triggers sex pheromone biosynthesis in moths via a GPCR, calcium, and cAMP signaling, and also regulates melanization, diapause, and other pheromones.
Pheromone trap
Pheromone trap: insect trap baited with synthetic pheromone lures, mainly sex pheromones, used for pest monitoring, mass trapping, and mating disruption in IPM; species-specific, non-toxic, deployed at ports of entry and in orchards.
Pherozeshah Mehta
Pherozeshah Mehta (फिरोजशाह मेहता) was an Indian political leader, lawyer, and municipal reformer of Bombay who drafted the Bombay Municipal Act of 1872 and led the Moderate wing of the Indian National Congress.
Phestilla
Phestilla (Bergh, 1874) is a genus of 11 Indo-Pacific aeolid nudibranchs in Trinchesiidae, obligate predators of specific stony corals such as Porites, Goniopora, Montipora, and Pavona, with host-shift speciation and aquarium-pest species like P. subodiosa.
PhET Interactive Simulations
PhET Interactive Simulations, originally short for Physics Education Technology, is a University of Colorado Boulder project, founded in 2002 by Carl Wieman, offering free interactive science and math simulations.
Phetchabun
Phetchabun (เพชรบูรณ์), a lower-northern Thai province on the Pa Sak River with about 960,000 residents, 11 districts, Khao Kho mountain scenery, and the UNESCO-listed ancient town of Si Thep (2023).
Phetracha
Phetracha was king of Ayutthaya in Siam from 1688 to 1703, who took the throne through the 1688 palace coup, expelled the French, and founded the Ban Phlu Luang dynasty.
Pheu Thai Party (พรรคเพื่อไทย)
The Pheu Thai Party (พรรคเพื่อไทย), also known as Puea Thai, is a Thai political party aligned with Thaksin Shinawatra that won a 2011 landslide under his sister Yingluck.
PHEX
PHEX (phosphate regulating endopeptidase X-linked, also PEX or HYP) is an X-chromosome gene encoding a zinc metalloendopeptidase of osteoblasts and osteocytes that suppresses FGF23; inactivating mutations cause X-linked hypophosphatemia.
PHF6
PHF6 (PHD finger protein 6) is an X-linked chromatin regulator gene; germline mutations cause Börjeson–Forssman–Lehmann syndrome, and somatic mutations recur in T-ALL and myeloid leukemia as a tumor suppressor.