| Substanz | Abkürzung | Systematik | Provings |
| N-Nitroso-N-methylurea N-Methyl-N-nitrosoharnstoff N-Nitroso-N-methylurea |
NMU | Nitrogenium Oxygenium |
|
| N6-(1-iminoethyl) L-lysin Dihydrochlorid |
L-NIL | Synthetic Drugs |
|
| Nabalus albus Weißer Lattich White Lettuce |
Nabal-a | Asteraceae/ Compositae |
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| Nabalus serpentarius Weißer Lattich White Lettuce |
Nabal | Asteraceae/ Compositae |
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| Nacella concinna Antarctic Limpet |
Nacel-c | Nacellidae |
|
| NADH Nicotinamidadenindinukleotid Nicotinamide adenine dinucleotide |
NADH | Products of the Cell Metabolism and Hormons |
|
| Nafarelinum aceticum Nafarelinacetat |
Nafac | Synthetic Drugs |
|
| Naftidrofurylhydrogenoxalat |
Naft-ox | Synthetic Drugs |
|
| Naja anchietae Anchietas Kobra Anchieta's cobra |
Naja-a | Elapidae |
|
| Naja atra Chinese cobra |
Naja-at | Elapidae |
|
| Naja haje Ägyptische Kobra Egyptian cobra |
Naja-h | Elapidae |
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| Naja kaouthia Monokelkobra Monocle Kobra |
Naja-k | Elapidae |
|
| Naja melanoleuca Schwarzweiße Waldkobra Forest Cobra |
Naja-m | Elapidae |
|
| Naja mossambica Speikobra Mozambique Spitting Cobra |
Naja-mo | Elapidae |
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| Naja nigricincta nigricincta Zebra spitting cobra |
Naja-nig | Elapidae |






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