All articles starting with a number or symbol

α-In2Se3

α-In2Se3, or alpha-phase indium selenide, is a layered III-VI semiconductor that shows room-temperature ferroelectricity down to a single monolayer, studied for non-volatile memory and neuromorphic computing.

α-In2Se3 ferroelectric semiconductor FeFET

An α-In2Se3 ferroelectric semiconductor FeFET, also called a ferroelectric channel transistor, is a transistor in which the two-dimensional ferroelectric semiconductor α-In2Se3 forms the channel itself, first demonstrated in 2019.

Α-Ketoglutaric acid

Α-Ketoglutaric acid, also called 2-oxoglutaric acid, is a five-carbon keto acid whose anion is α-ketoglutarate, a key intermediate in the citric acid cycle and nitrogen metabolism.

α-Li2IrO3

α-Li2IrO3 is a layered iridium oxide whose Ir4+ ions form a two-dimensional honeycomb lattice, one of the first candidate Kitaev quantum spin liquids, though at low temperature it orders magnetically in an incommensurate spiral pattern.

α-Melanocyte-stimulating hormone

α-Melanocyte-stimulating hormone (α-MSH) is a 13-amino-acid peptide hormone cut from the POMC protein, known for stimulating melanin synthesis in pigment cells and for suppressing food intake through melanocortin receptors in the brain.

Α-Methyltryptamine (αMT)

Alpha-methyltryptamine (αMT, Indopan) is a synthetic tryptamine acting as a stimulant and hallucinogen, developed in the 1960s as an antidepressant and controlled in the US since 2004.

α-Naphthoflavone

α-Naphthoflavone (ANF; 7,8-benzoflavone) is a synthetic extended flavonoid best known as a potent inhibitor of CYP1 enzymes and aromatase, and as an aryl hydrocarbon receptor modulator.

α-Oxy C–H functionalization

α-Oxy C–H functionalization converts the carbon–hydrogen bond next to an oxygen atom, in ethers and alcohols, into a new C–C or C–heteroatom bond without prefunctionalization.

α-Phellandrene

α-Phellandrene, chemically 5-isopropyl-2-methyl-1,3-cyclohexadiene, is a cyclic monoterpene hydrocarbon with a peppery aroma, a major component of some Eucalyptus leaf oils and an approved flavoring agent.

α-Pinene

Alpha-pinene is a naturally occurring bicyclic monoterpene, C₁₀H₁₆, emitted in large quantities by vegetation. It is the most abundant monoterpene in the atmosphere and a major precursor of secondary organic aerosol.

α-RuCl3

α-RuCl3, also written alpha-ruthenium trichloride, is a layered magnetic insulator with honeycomb planes of ruthenium ions and the leading candidate for a Kitaev quantum spin liquid.

α-RuCl3 as a Kitaev material

α-RuCl3 (alpha-ruthenium trichloride) is a layered magnetic insulator with Ru3+ ions on honeycomb lattices, the most intensively studied candidate for realizing the Kitaev quantum spin liquid in a real compound.

Sep 29, 2026

α-synuclein seed amplification assay

The α-synuclein seed amplification assay (αSyn-SAA) is an ultrasensitive laboratory test that amplifies misfolded α-synuclein seeds in cerebrospinal fluid to detect Parkinson's disease and related synucleinopathies.

α,β-Methylene ATP

α,β-Methylene ATP (α,β-meATP) is a synthetic ATP analog in which a methylene group replaces the α–β bridging oxygen, making it resistant to ecto-nucleotidases and useful as a selective agonist at P2X1 and P2X3 purinergic receptors.

Β-Alanine

β-Alanine (3-aminopropanoic acid, C3H7NO2) is a non-proteinogenic beta-amino acid and rate-limiting precursor of muscle carnosine; 4–6 g/day for 2–4 weeks modestly improves high-intensity exercise capacity, with paraesthesia as the main side effect.

Β-Carboline

Β-Carboline, also known as norharman, is a nitrogen-containing heterocycle and parent of the β-carboline alkaloids, found in plants, foods, tobacco smoke, and the human body.

β-Carbon elimination

β-Carbon elimination, also called β-alkyl elimination, is an organometallic elementary step that cleaves a C–C bond, expelling a carbon group from a metal alkyl's β-carbon to give an olefin.

β-Ga2O3 power device

A β-Ga2O3 power device is a transistor or Schottky barrier diode built on beta-phase gallium oxide, an ultra-wide-bandgap semiconductor with a very high breakdown field and inexpensive melt-grown substrates.

β-Ga2O3 solar-blind photonics

β-Ga2O3 solar-blind photonics uses gallium oxide's stable β phase in ultraviolet detectors that respond only below about 280 nm, where sunlight is absorbed by the atmosphere.

β-Ga2O3-based solar-blind photodetectors

β-Ga2O3-based solar-blind photodetectors are ultraviolet sensors built on beta-phase gallium oxide, whose ~4.9 eV bandgap detects deep-UV light at 200–280 nm without filters, used in flame detection and missile warning.

Β-Methylphenethylamine (β-Me-PEA)

β-Methylphenethylamine, also known as β-Me-PEA or BMPEA, is a synthetic phenethylamine stimulant and positional isomer of amphetamine, first synthesized in 1930 as a substitute for amphetamine.

Oct 21, 2026

Γ-Aminobutyric acid

Gamma-aminobutyric acid (GABA, 4-aminobutanoic acid) is a non-proteinogenic amino acid and the main inhibitory neurotransmitter in the vertebrate CNS, acting via GABA-A and GABA-B receptors and used in foods and supplements.

γ-Butyrolactone polymerization

γ-Butyrolactone polymerization is the ring-opening polymerization of γ-butyrolactone into poly(γ-butyrolactone), a biodegradable polyester fully recyclable back to monomer; catalysts developed since 2015 made efficient ambient-pressure polymerization possible.