#acids

• Alkalimetric — Pertaining to alkalimetry; based on the measurement of alkalinity or the concentration of bases in a solution. The term describes the methods, instruments, or reagents utilized in quantitative titration analyses, where the volume of a standard acid of known concentration determines the purity of the analyzed alkaline substance.
• 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.
• 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.
• Arsacids — Members of an ancient Iranian royal dynasty, founded by Arsaces I, who ruled the Parthian Empire from the 3rd century BC to the 3rd century AD. This dynastic lineage consolidated a powerful and decentralized state, noted for its long-lasting military resistance against the expansion of the Roman Empire and for its Hellenistic-Persian cultural syncretism.
• Autoxidation — A spontaneous and slow oxidation chemical reaction of a substance (such as fatty acids, oils, polymers, or organic compounds) that occurs upon direct contact with molecular oxygen in the air at ordinary temperatures and without the intervention of a strong oxidizing agent or a flame. This structural autocatalytic process involves the formation of free radicals and peroxides, being responsible for food rancidity, rubber degradation, or biological tissue aging.