ar: Arabic · bg: Bulgarian · cs: Czech · da:Danish · de: German · el: Greek · en: English · es: Spanish · et : Estonian · fa: Persian · fi: Suomi · fr: French · he: Hebrew · hi: Hindi · hr: Croatian · hu: Hungarian · id: Indonesian · is: Icelandic · it: Italian · ja: Japanese · ko: Korean · lt: Lithuanian · lv: Latvian · nl: Dutch · no: Norwegian · pl: Polish · pt: Portuguese · ro: Romanian · ru: Russian · sk: Slovak · sl: Slovenian · sr: Serbian · sv: Swedish · th: Thai · tr: Turkish · vi: Vietnamese · zh: Chinese

... OPIPERA ... (9 elements)

en (4) : DIKETOPIPERAZINE · DIKETOPIPERAZINES · PYRROLODIKETOPIPERAZINES · PYRROLOPIPERAZINEDIONES

fr (5) : DICETOPIPERAZINE · DICETOPIPERAZINES · DIOXOPIPERAZINE · PYRROLODICETOPIPERAZINES · PYRROLOPIPERAZINEDIONES

... OPIPER ... (14 elements)

DICETOPIPERAZINE · DICETOPIPERAZINES · DIKETOPIPERAZINE · DIKETOPIPERAZINES · DIOXOPIPERAZINE · HYDROPIPER · ISOPIPERITENOLO · PYRROLODICETOPIPERAZINES · PYRROLODIKETOPIPERAZINES · PYRROLOPIPERAZINEDIONES

... PIPERA ... (85 elements)

BENZYLPIPERAZIN · BENZYLPIPERAZINE · DIMETHYLPHENYLPIPERAZINIUM · DIOXOPIPERAZINE · HYDROXYETHYLPIPERAZINE · PIPERA · PIPERAUD · PIPERAZIN · PIPERAZINYL · PIPERAZYNA

... LOPIPERA ... (2 elements)

PYRROLOPIPERAZINEDIONES

... OPIPERAZ ... (9 elements)

DICETOPIPERAZINE · DICETOPIPERAZINES · DIKETOPIPERAZINE · DIKETOPIPERAZINES · DIOXOPIPERAZINE

... TOPIPERA ... (6 elements)

DICETOPIPERAZINE · DICETOPIPERAZINES · DIKETOPIPERAZINE · DIKETOPIPERAZINES · PYRROLODICETOPIPERAZINES

... XOPIPERA ... (1 element)

DIOXOPIPERAZINE