#amino

• Alanine — A non-essential, structurally aliphatic amino acid with the chemical formula CH3-CH(NH2)-COOH, which is a constituent of most proteins in living organisms; it plays a fundamental role in glucose metabolism through the glucose-alanine cycle, allowing muscles to convert amino acids into energy and transport residual nitrogen to the liver for elimination as urea. This organic compound actively participates in protein synthesis, immune system support, and blood sugar regulation.
• Amidol — A crystalline organic compound from the aminophenol class, structurally used as an exceptionally active photographic developing agent, chemically known as 2,4-diaminophenol dihydrochloride. It possesses the unique property of developing effectively in slightly acidic or neutral solutions without requiring the addition of strong alkalis, producing high-quality black-and-white photographic images with rich, deep black tones.
• Amidopyrine — A medicinal compound from the pyrazolone class, historically used as a potent analgesic, antipyretic, and anti-inflammatory agent, chemically known as aminophenazone. Although it possesses high structural efficiency in combating fever and acute pain, its modern clinical use has been severely restricted or banned in most countries due to the documented risk of inducing severe agranulocytosis and the formation of carcinogenic nitrosamines in the stomach.
• Amine — An organic compound structurally derived, theoretically or practically, from ammonia by replacing one, two, or all three hydrogen atoms with hydrocarbon radicals (alkyl or aryl). Depending on the number of hydrogen atoms replaced, amines are classified into primary, secondary, and tertiary, possessing basic character and playing crucial biological and industrial roles (ranging from amino acids and neurotransmitters to dyes and pharmaceuticals).
• Amination — A chemical process by which an amino group is introduced into the molecule of an organic compound, typically through reaction with ammonia or other aminating agents. This structural reaction is essential in the industrial synthesis of numerous dyes, medications, plastics, and in biochemistry pathways for amino acid formation.
• Amino- — A scientific combining form (prefixoid) used in international chemical nomenclature to indicate the presence of the monovalent functional group (-NH2), derived from ammonia, within the structure of an organic compound. As an invariable adjective, it is used in biochemistry to designate fundamental compounds, such as amino acids, which form the basis of protein synthesis in all living organisms.
• Aminoacetic — Derived from acetic acid by substituting a hydrogen atom in the methyl group with an amino group. The term is used almost exclusively in the phrase 'aminoacetic acid', the systematic name for glycine (or glycocoll), the simplest natural aliphatic amino acid, a basic structural constituent of animal proteins, used in medicine as a nutrient and in industry as a buffer solution.
• Amino acid — An organic compound with a mixed function, containing in its molecule one or more amino groups (-NH2) and carboxyl groups (-COOH). These structural compounds are the fundamental building blocks of proteins, classified into essential (which cannot be synthesized by the organism and must be provided by diet) and non-essential, playing a crucial role in cellular metabolism, enzyme synthesis, and nerve impulse transmission.
• Aminoacidemia — The total concentration or presence of free amino acids in the blood stream. The structural measurement of aminoacidemia is a fundamental laboratory analysis for neonatal screening and diagnosing inborn errors of metabolism, such as phenylketonuria, or for monitoring liver and kidney function in critical pathological states.
• Aminoaciduria — An abnormal or excessive excretion of amino acids in the urine. This clinical structural phenomenon indicates either an inborn error of metabolism, characterized by massive plasma accumulation of a specific amino acid exceeding the renal reabsorption threshold, or a direct dysfunction of the proximal renal tubules, which become unable to retain these useful nitrogenous compounds.
• Amino alcohol — An organic compound with mixed functionality, whose molecule simultaneously contains an amino group (-NH2) and a hydroxyl group (-OH) attached to a hydrocarbon chain. These structural compounds, also known as alkanolamines (such as ethanolamine or choline), possess a strong basic character and are essential intermediates in the synthesis of pharmaceuticals, detergents, emulsifiers, and in cell membrane lipid metabolism.
• Aminobenzene — The official systematic name for aniline, representing the simplest primary aromatic amine consisting of a benzene ring directly bonded to an amino group (-NH2). This oily liquid, colorless when pure but turning brown upon exposure to air, has a molecular structure that serves as a fundamental raw material in the industrial synthesis of azo dyes, pharmaceuticals, vulcanization accelerators, and plastics.
• Aminobenzoic — Derived from benzoic acid by introducing an amino group (-NH2) onto the aromatic ring. The term is used almost exclusively in the phrase 'aminobenzoic acid', an aromatic carboxylic acid displaying three structural isomers (ortho, meta, and para), of which para-aminobenzoic acid (PABA) carries major biological importance as a growth factor for microorganisms and as an intermediate in the synthesis of local anesthetics and sunscreens.
• Aminophenazone — An organic compound of the pyrazolone class, historically widely used as a drug with potent analgesic, antipyretic, and anti-inflammatory properties (also known as pyramidon). Due to its major structural risk of causing severe agranulocytosis and its carcinogenic potential through the formation of nitrosamines, its clinical use has been banned or severely restricted in modern medicine.
• Aminophenol — A bifunctional organic compound with amphoteric character, derived from phenol by replacing a hydrogen atom on the aromatic ring with an amino group (-NH2). It has three positional isomers (ortho, meta, and para), of which para-aminophenol is the most industrially important, serving as a key structural intermediate in the synthesis of paracetamol, hair dyes, and photographic developers.
• Aminophylline — A stable complex composed of theophylline and ethylenediamine in a one-to-one molar ratio, widely used as a bronchodilator medication in the treatment of obstructive airway diseases, such as bronchial asthma and chronic obstructive pulmonary disease (COPD). Due to its xanthine component, it inhibits phosphodiesterase, increasing intracellular cyclic AMP levels, which leads to the relaxation of bronchial smooth muscle and direct relief of dyspnea attacks.
• Aminolac — A commercial or technical name attributed to a synthetic resin obtained through the polycondensation of urea or melamine with formaldehyde. Due to its rigid and resistant macromolecular network, this structural compound is utilized as a basic raw material in manufacturing industrial varnishes, enamels, and protective film-forming finishes for wood or metallic surfaces.
• Aminopeptidase — An enzyme of the exopeptidase class that catalyzes the specific hydrolysis of peptide bonds at the free N-terminal end of a polypeptide chain, successively releasing terminal amino acids. This biocatalyst plays an essential structural role in the final phases of protein digestion within the intestinal mucosa, as well as in intracellular protein degradation and recycling processes.
• Aminoplast — A generic name given to synthetic plastic materials, specifically thermosetting resins, obtained through the polycondensation of a nitrogenous base (such as urea, melamine, or thiourea) with an aldehyde, particularly formaldehyde. Due to their three-dimensional cross-linked structure, these products exhibit high hardness, thermal resistance, and excellent insulating properties, being widely used in manufacturing molded objects, electrical insulators, and laminates.
• Aminous — Containing or exhibiting the characteristics of an amino group or an nitrogen-modified carbohydrate structure; relating to compounds that possess a high content of aminic radicals. It can also function contextually as a simplified structural or linguistic variant for amino sugars found in the composition of complex polysaccharides within cell walls.