AynhoA village and civil parish in West Northamptonshire, Northamptonshire, England, previously in South Northamptonshire district (OS grid ref SP5133).
ayuA sweetfish, an amphidromous game fish of East Asia of species Plecoglossus altivelis, prized for its sweet-tasting flesh and subject to extensive aquaculture.
azaA nitrogen atom substituted for a carbon atom within a ring.
azaaceneAny compound based on an acene in which one or more carbon atoms (normally a >CH group) is replaced by a nitrogen atom
azaadamantaneA polycyclic heterocycle formally derived from adamantane by replacing a carbon (and hydrogen) atom with a nitrogen atom; any derivative of this compound
azaareneAny organic compound formally derived from an arene by replacing a carbon atom (or a -CH= group) with a nitrogen atom
AzacualpaA town in Chalatenango department, El Salvador.
azacyclicDescribing any heterocycle having one or more nitrogen atoms in the ring
azacyclonolA drug used to diminish hallucinations in psychotics.
azacyclophaneAny derivative of a cyclophane in which one or more CH groups have been replaced by a nitrogen atom
azacytidineA synthetic analogue of cytidine used in the treatment of myelodysplastic syndrome
azacytosineEither of two isomeric derivatives of cytosine in which a -CH= group is replaced by -N=; the 5- isomer inhibits the action of DNA-methyltransferases
azaenolateA chemical analog of an enolate where the oxygen is substituted by nitrogen: M-N(R)C(R')=R
azaerythromycinAny of a group of antibiotics derived from erythromycin
azafenidinThe triazolone herbicide 2-(2,4-dichloro-5-prop-2-ynyloxyphenyl)-5,6,7,8-tetrahydro-1,2,4-triazolo[4,3-a]pyridin-3(2H)-one used against annual and perennial weeds.
azafluorantheneA fluoranthene in which one or more carbon atoms has been replaced by nitrogen
azafluoreneEther of two isomeric aromatic heterocycles in which a -CH= group has been substituted by -N=
azafranilloA Mexican flower (Escobedia scabrifolia) whose roots are the chief source of the orange dye azafrin.
azafrinAn orange pigment with chemical formula C₂₇H₃₈O₄, found in azafranillo root (Escobedia scabrifolia).
azalideAny of a class of macrolide antibiotics which contain a nitrogen in the macrolide ring.
azalignaneAny derivative of a lignane in which one or more of the benzene rings has been replaced with pyridine.
AzalismOne of the two branches of Bábism, the other being Baháʼism.
azalogueA compound that is analogous to another, the only difference being that a carbon atom (normally a CH group) has been replaced with a nitrogen one
azaniumylThe univalent inorganic radical cation NH₃^(+.) derived from ammonia; ammoniumyl
azanucleosideAny nucleoside in which one or more carbon atoms have been replaced by nitrogen
azapeptideAny peptide in which one or more of the amino residues is replaced by a semicarbazide
azaperoneA pyridinylpiperazine and butyrophenone neuroleptic drug with sedative and antiemetic effects, used mainly as a tranquilizer in pigs and elephants.
azaphenaleneA tricyclic aromatic heterocycle formally derived from phenalene by replacing a carbon atom (of the cyclohexene ring) by nitrogen (more precisely, an >NH group)