All articles starting with a number or symbol
13,599 articles
1 Maccabees
1 Maccabees, also called the First Book of Maccabees, is a Jewish historical work narrating the Maccabean revolt against Antiochus IV and the Hasmonean rise to 135/134 BCE.
1 Main Circuit
The 1 Main Circuit (1MC) is the general announcing system of United States Navy ships, a one-way public address circuit carrying alarms and announcements, known as "passing the word," to every space in the ship.
1 methoxy 4 propenylbenzene
1-Methoxy-4-propenylbenzene, or anethole (CAS 104-46-1), C10H12O, the anise-scented phenylpropene ether of star anise and fennel; trans isomer dominant; EU non-approved pesticide but authorized feed additive.
1 naphthylacetamide
1-Naphthylacetamide (1-NAD, NAAm, 2-(1-naphthyl)acetamide, CAS 86-86-2) is a synthetic auxin plant growth regulator used for fruit thinning, preventing preharvest drop, and rooting cuttings; EU-approved since 2012, distinct from 1-naphthylacetic acid.
1 Night in Paris
1 Night in Paris (also One Night in Paris) is a 2004 Red Light District adult video of Paris Hilton and Rick Salomon, leaked online in 2003, selling over $20 million and topping the 2005 AVN Awards.
1 nm process
A 1 nm process is a marketing and roadmap designation for the next generation of logic chips, planned by Intel, Samsung, and TSMC for roughly 2027 to 2030.
1 Police Plaza
1 Police Plaza, often written One Police Plaza, is the brutalist headquarters of the New York City Police Department in Lower Manhattan, dedicated in 1973.
1 Timothy 2:12
1 Timothy 2:12 is a New Testament verse in which the author states that he does not permit a woman to teach or exercise authority over a man.
1 World Trade Center (1970–2001)
1 World Trade Center, known as the North Tower, was a 110-story Manhattan skyscraper completed in 1972 and destroyed in the September 11, 2001 attacks.
1-800-273-8255 (song)
1-800-273-8255 is a 2017 Logic song featuring Alessia Cara and Khalid, titled after the National Suicide Prevention Lifeline number; a BMJ study linked it to 9,915 excess Lifeline calls and 245 fewer suicides.
1-Adamantanecarboxylic acid
1-Adamantanecarboxylic acid, also called adamantoic acid, is a carboxylic acid attached at a bridgehead carbon of adamantane, prepared by Koch–Haaf carboxylation and used in saxagliptin synthesis.
1-Aminocyclopentane-1,3-dicarboxylic acid
1-Aminocyclopentane-1,3-dicarboxylic acid, or ACPD, is a conformationally constrained analog of the neurotransmitter glutamate with four stereoisomers, used as a tool compound in metabotropic glutamate receptor research.
1-aminocyclopropane-1-carboxylate deaminase
ACC deaminase (EC 3.5.99.7, acdS) is a PLP-dependent microbial enzyme cleaving the ethylene precursor ACC into ammonia and alpha-ketobutyrate, lowering stress ethylene; used in PGPR biofertilizers and transgenic stress-tolerant crops.
1-Aminocyclopropane-1-carboxylic acid
1-Aminocyclopropane-1-carboxylic acid, abbreviated ACC, is a non-proteinogenic alpha-amino acid formed from SAM by ACC synthase and converted to the plant hormone ethylene by ACC oxidase.
1-Butanol
1-Butanol, also called n-butanol or butyl alcohol, is a colorless four-carbon primary alcohol with formula C4H10O, produced mainly from propylene as a solvent and intermediate for coatings chemicals.
1-Butene
1-Butene, also called but-1-ene or α-butene, is a colorless, flammable four-carbon alkene gas (C₄H₈) whose main industrial use is as a comonomer with ethylene in producing linear low-density and high-density polyethylene.
1-Butyl-3-methylimidazolium chloride
1-Butyl-3-methylimidazolium chloride, also known as BMIMCl or [Bmim]Cl, is an imidazolium ionic liquid, a molten organic salt that dissolves up to 25 wt% cellulose and opened ionic-liquid processing of biomass.
1-Butyl-3-methylimidazolium hexafluorophosphate
1-Butyl-3-methylimidazolium hexafluorophosphate ([bmim][PF6]) is a hydrophobic room-temperature ionic liquid, immiscible with water, whose PF6 anion hydrolyzes to HF, used as a solvent in biphasic catalysis.
1-Butyl-3-methylimidazolium tetrafluoroborate
1-Butyl-3-methylimidazolium tetrafluoroborate, abbreviated [bmim][BF4], is a room-temperature ionic liquid made of the 1-butyl-3-methylimidazolium cation and tetrafluoroborate anion, widely used as a solvent in organic synthesis, electrochemistry, and materials processing.
1-Chloro-2,4-dinitrobenzene
1-Chloro-2,4-dinitrobenzene, also known as dinitrochlorobenzene or DNCB, is an aromatic compound and the standard substrate for glutathione S-transferase assays, once used as a clinical contact sensitizer.
1-Decene
1-Decene, also called dec-1-ene or α-decene, is a linear alpha olefin (C₁₀H₂₀) with a terminal double bond, a colorless liquid used mainly for synthetic lubricants.
1-deoxy-D-xylulose-5-phosphate synthase
1-deoxy-D-xylulose-5-phosphate synthase (DXS, DXPS, EC 2.2.1.7), the thiamine diphosphate-dependent first enzyme of the non-mevalonate (MEP) isoprenoid pathway, absent from humans, rate-limiting, and a target for antibiotics, herbicides, and terpenoid metabolic engineering.
1-Deoxysphingolipids
1-Deoxysphingolipids (1-deoxySLs) are "headless" sphingolipids lacking the C1-OH group, made by serine palmitoyltransferase using alanine or glycine. They cause HSAN1 neuropathy, are elevated in metabolic syndrome and type 2 diabetes, and occur in seafoods.
1-Ethyl-3-(3-dimethylaminopropyl)carbodiimide
1-Ethyl-3-(3-dimethylaminopropyl)carbodiimide (EDC, also written EDAC or EDCI) is a water-soluble carbodiimide that couples carboxylic acids to primary amines, forming amide bonds with no spacer, making it a zero-length crosslinker.
1-Ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide
EMIM TFSI, also known as EMIM NTf2, is a hydrophobic room-temperature ionic liquid of the imidazolium family, valued for low viscosity, high conductivity, and a wide electrochemical window.
1-Ethyl-3-methylimidazolium chloride
1-Ethyl-3-methylimidazolium chloride (EMIMCl, [Emim]Cl) is an imidazolium ionic liquid, a chloride salt melting at 77 to 79 °C that dissolves cellulose and serves as a precursor to chloroaluminate electrolytes.
1-Fluoro-2,4-dinitrobenzene
1-Fluoro-2,4-dinitrobenzene, also known as DNFB or Sanger's reagent, is an organofluorine compound Sanger used in 1945 to label insulin's amino groups, work leading to the first protein sequence.
1-Heptanol
1-Heptanol, also called heptyl alcohol or enanthic alcohol, is a colorless, slightly water-soluble seven-carbon primary alcohol with formula C₇H₁₆O, made from hexenes and used as a permitted flavoring agent.
1-Hexanol
1-Hexanol, also called hexan-1-ol or hexyl alcohol, is a six-carbon primary alcohol, a colorless liquid with a fatty, fruity, green odor used in flavorings, fragrances, and solvents.
1-Hexene
1-Hexene, also called hex-1-ene or butyl ethylene, is a linear alpha olefin with formula C₆H₁₂, a colorless, flammable liquid produced mainly as a comonomer for polyethylene.