| Norpregnanes | Pregnanes which have undergone ring contractions or are lacking carbon-18 or carbon-19.... more | 33 | 116 | Details |
| Norpregnatrienes | Pregnatrienes which have undergone ring contractions or are lacking carbon-18 or carbon... more | 9 | 40 | Details |
| Norpregnenes | Pregnenes with one double bond or more than three double bonds which have undergone rin... more | 17 | 72 | Details |
| Norsteroids | Steroids which have undergone contraction in ring size or reduction in side chains. | 34 | 130 | Details |
| Noxae | Agents capable of exerting a harmful effect on the body. | 157 | 628 | Details |
| NS3/4A Protease Inhibitors | Inhibitors of the NS3/4A serine protease of Hepatitis C Virus (HCV). | 7 | 56 | Details |
| NTCP Inhibitors | Group of drugs that inhibit the sodium-taurocholate co-transporting polypeptide (NTCP). | 7 | 79 | Details |
| Nuclear Export Inhibitors | Agents which inhibit nuclear export via blockade of exportin-1. | 2 | 4 | Details |
| Nuclear Matrix-Associated Proteins | A broad category of nuclear proteins that are components of or participate in the forma... more | 1 | 0 | Details |
| Nuclear Proteins | Proteins found in the nucleus of a cell. Do not confuse with NUCLEOPROTEINS which are p... more | 4 | 2 | Details |
| Nucleic Acid Probes | Nucleic acid which complements a specific mRNA or DNA molecule, or fragment thereof; us... more | 9 | 11 | Details |
| Nucleic Acid Synthesis Inhibitors | Compounds that inhibit cell production of DNA or RNA. | 68 | 477 | Details |
| Nucleic Acid-Based Vaccines | Vaccines formulated with nucleic acids specific for a target antigen. They are designed... more | 13 | 0 | Details |
| Nucleic Acids | High molecular weight polymers containing a mixture of purine and pyrimidine nucleotide... more | 16 | 15 | Details |
| Nucleic Acids, Nucleotides, and Nucleosides | Complex compounds of high molecular weight occurring in living cells. These are basical... more | 326 | 1145 | Details |
| Nucleocapsid Proteins | Viral proteins found in either the NUCLEOCAPSID or the viral core (VIRAL CORE PROTEINS). | 1 | 0 | Details |
| Nucleoproteins | Proteins conjugated with nucleic acids. | 3 | 2 | Details |
| Nucleoside Analog | Not Available | 0 | 0 | Details |
| Nucleoside Analog Antifungal | Not Available | 1 | 3 | Details |
| Nucleoside Analog Antiviral | Not Available | 6 | 35 | Details |
| Nucleoside and Nucleotide Reverse Transcriptase Inhibitors | Not Available | 13 | 110 | Details |
| Nucleoside Deaminases | Catalyze the hydrolysis of nucleosides with the elimination of ammonia. | 3 | 3 | Details |
| Nucleoside Diphosphate Sugars | Not Available | 3 | 17 | Details |
| Nucleoside Metabolic Inhibitor | Not Available | 12 | 115 | Details |
| Nucleoside Reverse Transcriptase Inhibitors | Not Available | 13 | 86 | Details |