Alpha /ˈælfə/ (uppercase Α, lowercase α) is the first letter of the Greek alphabet. In the system of Greek numerals, it has a value of one. Alpha is derived...

α-Pyrrolidinopentiophenone (also known as α-pyrrolidinovalerophenone, α-PVP, O-2387, β-keto-prolintane, prolintanone, or desmethylpyrovalerone) is a synthetic...

α-Amylase is an enzyme (EC 3.2.1.1; systematic name 4-α-D-glucan glucanohydrolase) that hydrolyses α bonds of large, α-linked polysaccharides, such as...

(α Centauri, α Cen, or Alpha Cen) is a triple star system in the southern constellation of Centaurus. It consists of three stars: Rigil Kentaurus (α Centauri...

α-Cyclodextrin (alpha-cyclodextrin), sometimes abbreviated as α-CD, is a hexasaccharide derived from glucose. It is related to the β- (beta) and γ- (gamma)...

α-Galactosidase ( EC 3.2.1.22, α-GAL, α-GAL A; systematic name α-D-galactoside galactohydrolase) is a glycoside hydrolase enzyme that catalyses the following...

α-Hexachlorocyclohexane (α-HCH) is an organochloride which is one of the isomers of hexachlorocyclohexane (HCH). It is a byproduct of the production of...

The enzyme α,α-phosphotrehalase (EC 3.2.1.93) catalyzes the following chemical reaction: α,α-trehalose 6-phosphate + H2O ⇌ {\displaystyle \rightleftharpoons...

α-Galactosylceramide (α-GalCer, KRN7000) is a synthetic glycolipid derived from structure-activity relationship studies of galactosylceramides isolated...

α-Pyrrolidinohexiophenone (α-PHP, A-PHP, Aphp, alpha-PHP, α-Pyrrolidinohexanophenone, PV-7) is a synthetic stimulant drug of the cathinone class developed...

α-PCyP (α-PyrrolidinoCyclohexanoPhenone) is a stimulant drug of the cathinone class that has been sold online as a designer drug. In a series of alpha-substituted...

α-Glucosidase (EC 3.2.1.20, (systematic name α-D-glucoside glucohydrolase) is a glucosidase located in the brush border of the small intestine that acts...

α-Carotene (alpha-carotene) is a form of carotene with a β-ionone ring at one end and an α-ionone ring at the opposite end. It is the second most common...

α-Mannosidase (EC 3.2.1.24, α-D-mannosidase, p-nitrophenyl-α-mannosidase, α-D-mannopyranosidase, 1,2-α-mannosidase, 1,2-α-D-mannosidase, exo-α-mannosidase)...

An α,α-trehalase (EC 3.2.1.28) is an enzyme with systematic name α,α-trehalose glucohydrolase. This enzyme catalyzes the chemical reaction α,α-trehalose...

5-methoxy-αMT (5-MeO-αMT), α,N-dimethyltryptamine (α,N-DMT; N-methyl-αMT), α,N,N-trimethyltryptamine (α,N,N-TMT; N-dimethyl-αMT), α-methylserotonin (α-methyl-5-HT;...

α − 1 ( 1 − x ) β − 1 d x = 1 B ( α , β ) ∂ B ( α , β ) ∂ α = ∂ ln ⁡ B ( α , β ) ∂ α = ∂ ln ⁡ Γ ( α ) ∂ α − ∂ ln ⁡ Γ ( α + β ) ∂ α = ψ ( α ) − ψ ( α +...

α-Tocopherol (alpha-tocopherol) is a type of vitamin E. Its E number is "E307". Vitamin E exists in eight different forms, four tocopherols and four tocotrienols...

α-arbutin, is a glycosylated hydroquinone, and an anomer of the naturally occurring arbutin. α-Arbutin is used in the cosmetic and pharmaceutical industries...

4-Methyl-α-methyltryptamine (4-Me-αMT), also known as 4,α-dimethyltryptamine (4,α-DMT), and MP-809, is a drug belonging to the tryptamine class that was...

expressed as H α ( 1 ) ( x ) = J − α ( x ) − e − α π i J α ( x ) i sin ⁡ α π , H α ( 2 ) ( x ) = J − α ( x ) − e α π i J α ( x ) − i sin ⁡ α π . {\displaystyle...

α-Methylfentanyl (or alpha-Methylfentanyl) an opioid analgesic that is an analog of fentanyl. It is sometimes sold as "China White". α-Methylfentanyl was...

α-Neoendorphin is an endogenous opioid peptide with a decapeptide structure and the amino acid sequence Tyr-Gly-Gly-Phe-Leu-Arg-Lys-Tyr-Pro-Lys. α-Neoendorphin...

α-Pinene is an organic compound of the terpene class. It is one of the two isomers of pinene, the other being β-pinene. An alkene, it contains a reactive...

α-Zearalenol is a nonsteroidal estrogen of the resorcylic acid lactone group related to mycoestrogens found in Fusarium spp. It is the α-epimer of β-zearalenol...

α-Ethyltryptamine (αET, AET), also known as etryptamine, is an entactogen and stimulant drug of the tryptamine family. It was originally developed and...

similar chemical properties. α-Phellandrene and β-phellandrene are cyclic monoterpenes and are double-bond isomers. In α-phellandrene, both double bonds...

The Arcfox α-T (极狐阿尔法T, Alpha-T) is an all-electric mid-size crossover SUV manufactured by BAIC under the Arcfox brand. The α-T is the first production...

α-Aminoadipic acid is one of the metabolic precursor in the biosynthesis of lysine through α-aminoadipate pathway. Its conjugate base is α-aminoadipate...

α-Methylacetylfentanyl (or alphamethylacetylfentanyl) is an opioid analgesic that is an analog of fentanyl. It is a Schedule I controlled substance in...