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The prefix aza- is used in organic chemistry to form names of organic compounds where a carbon atom is replaced by a nitrogen atom. The related term "deaza-" refers to when a nitrogen is removed and, usually, a carbon atom is put in its place. Sometimes a number between hyphens is inserted before it to state which atom the nitrogen atom replaces. It arose by shortening the word azote, which is an obsolete name for nitrogen in the English language and occurs in current French usage (L'azote), meaning "Nitrogen". This prefix is part of the Hantzsch–Widman nomenclature.

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  • Aza-
  • Aza-
  • Aza-
  • Aza (prefixo)
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  • In der chemischen Nomenklatur wird die Vorsilbe (Präfix) Aza-, benutzt, um anzugeben, dass einem Stoff gegenüber einem anderen Stoff (Stammverbindung) ein Kohlenstoffatom durch ein Stickstoffatom ersetzt wurde.Der ähnliche Präfix "Deaza-" oder "Desaza-" benennt umgekehrt den Ersatz eines Stickstoffatoms in einer Stammverbindung durch ein Kohlenstoffatom. Wenn notwendig wird durch eine vorgestellte Ziffer angegeben welche Methingruppe (CH) ersetzt wurde, z. B. in der Stammverbindung Anthracen (siehe Abb.). Das Präfix ist Teil der Hantzsch-Widman-Nomenklatur.
  • En chimie organique, le préfixe aza- de la nomenclature des hétérocycles, dite de Hantzsch-Widman, désigne les composés dont un atome de carbone a été remplacé par un atome d'azote. Le terme diaza- associé fait référence à un composé dont un atome d'azote a été retiré, généralement pour être remplacé par un atome de carbone. Le numéro de l'atome remplacé est parfois indiqué avec un tiret. Ce préfixe dérive par contraction du mot français azote.
  • Aza-, em química orgânica, é um prefixo usado para indicar que, em uma cadeia carbônica, um átomo de carbono foi substituído por um átomo de nitrogênio (ou azoto, de onde deriva o prefixo). O prefixo faz parte da nomenclatura de Hantzsch–Widman.
  • The prefix aza- is used in organic chemistry to form names of organic compounds where a carbon atom is replaced by a nitrogen atom. The related term "deaza-" refers to when a nitrogen is removed and, usually, a carbon atom is put in its place. Sometimes a number between hyphens is inserted before it to state which atom the nitrogen atom replaces. It arose by shortening the word azote, which is an obsolete name for nitrogen in the English language and occurs in current French usage (L'azote), meaning "Nitrogen". This prefix is part of the Hantzsch–Widman nomenclature.
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  • The prefix aza- is used in organic chemistry to form names of organic compounds where a carbon atom is replaced by a nitrogen atom. The related term "deaza-" refers to when a nitrogen is removed and, usually, a carbon atom is put in its place. Sometimes a number between hyphens is inserted before it to state which atom the nitrogen atom replaces. It arose by shortening the word azote, which is an obsolete name for nitrogen in the English language and occurs in current French usage (L'azote), meaning "Nitrogen". This prefix is part of the Hantzsch–Widman nomenclature. It's worthy to record mention of the fact that while the above fig. gives an example or 4-aza steroids, 6-aza steroids have also been developed by GSK (cf. 5-alpha-reductase_inhibitor), although none of these compounds, as yet, are available for sale commercially.
  • In der chemischen Nomenklatur wird die Vorsilbe (Präfix) Aza-, benutzt, um anzugeben, dass einem Stoff gegenüber einem anderen Stoff (Stammverbindung) ein Kohlenstoffatom durch ein Stickstoffatom ersetzt wurde.Der ähnliche Präfix "Deaza-" oder "Desaza-" benennt umgekehrt den Ersatz eines Stickstoffatoms in einer Stammverbindung durch ein Kohlenstoffatom. Wenn notwendig wird durch eine vorgestellte Ziffer angegeben welche Methingruppe (CH) ersetzt wurde, z. B. in der Stammverbindung Anthracen (siehe Abb.). Das Präfix ist Teil der Hantzsch-Widman-Nomenklatur.
  • En chimie organique, le préfixe aza- de la nomenclature des hétérocycles, dite de Hantzsch-Widman, désigne les composés dont un atome de carbone a été remplacé par un atome d'azote. Le terme diaza- associé fait référence à un composé dont un atome d'azote a été retiré, généralement pour être remplacé par un atome de carbone. Le numéro de l'atome remplacé est parfois indiqué avec un tiret. Ce préfixe dérive par contraction du mot français azote.
  • Aza-, em química orgânica, é um prefixo usado para indicar que, em uma cadeia carbônica, um átomo de carbono foi substituído por um átomo de nitrogênio (ou azoto, de onde deriva o prefixo). O prefixo faz parte da nomenclatura de Hantzsch–Widman.
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  • Finasteride , is an aza analog of testosterone , with a carbon atom in position 4 replaced by a nitrogen atom.
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