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

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

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

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...

homolog of α-pyrrolidinohexiophenone (α-PHP). In the United States, α-pyrrolidinoheptaphenone is a Schedule I Controlled Substance. α-PHP α-PHiP α-PCyP 4F-PV9...

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...

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

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...

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...

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

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...

of whom died after consuming 1g of αMT. 4-Methyl-αMT 5-Fluoro-αMT 5-MeO-αMT α-Ethyltryptamine α,N-DMT α,N,N-TMT α-Methyl-5-HT MAOI potency was comparable...

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)...

α-Methylstyrene (AMS) is an organic compound with the formula C6H5C(CH3)=CH2. It is a colorless oil. AMS is formed as a by-product of the Cumene process...

α-Ethyltryptamine (αET, AET), also known as etryptamine (INN, BAN, USAN), is a psychedelic, stimulant, and entactogenic drug of the tryptamine class. It...

α-O (alpha-oxygen) is a reactive oxygen species formed from an oxygen-atom abstraction (OAT) from nitrous oxide (N2O) by alpha-iron (α-Fe) catalysts. The...

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...

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...

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

α-Lactalbumin, also known as LALBA, is a protein that in humans is encoded by the LALBA gene. α-Lactalbumin is a protein that regulates the production...

known as α-blockers or α-adrenoreceptor antagonists, are a class of pharmacological agents that act as antagonists on α-adrenergic receptors (α-adrenoceptors)...

α-Amanitin (alpha-Amanitin) is a cyclic peptide of eight amino acids. It is possibly the most deadly of all the amatoxins, toxins found in several species...

healing. TNF-α exists as a transmembrane form (mTNF-α) and as a soluble form (sTNF-α). sTNF-α results from enzymatic cleavage of mTNF-α, by a process...