| I | iodine | |
| IBMX | 3-isobutyl-1-methylxanthine | |
| IDP | inosine 5'-diphosphate, trisodium salt hydrate | |
| IDU | 5-iodo-2'-deoxyuridine; (+)-5-iodo-2'-deoxyuridine | |
| IIDQ | (2-isobutoxy-1-isobutoxycarbonyl-1,2-dihydroquinoline; isobutyl 1,2-dihydro-2-isobutoxy-1-quinolinecarboxylate) | |
| Immid | imidazole | |
| Immobilon destain | acetic acid, methanol | |
| IMP | inosine 5'-monophosphate | |
| In | indium | |
| I-5'-P | inosine 5'-monophosphate | |
| IPA | 2-propanol | |
| IPC | isopropyl N-phenylcarbamate | |
| IPL-41 Insect Medium | ||
| IPTG | isopropyl-b-D-thiogalactopyranoside | |
| Ir | iridium | |
| IR-140 | (5,5'-dichloro-11-diphenylamino-3,3'-diethyl-10,12-ethylenethiatricarbocyanine perchlorate) | |
| IR-27 | (4-[2-chloro-3-[(2-phenyl-4H-1-benzopyran-4-ylidene)-ethylidine]-
1-cyclohexene-1-yl)ethenyl]-2-phenyl-1-benzopyrylium perchlorate) benzopyrilium-based dye with excitation maximum in the infrared |
|
| K | potassium | |
| K2CO3 | potassium carbonate | |
| K2HPO4 | potassium phosphate (dibasic) | |
| K3PO4 | potassium phosphate (tribasic) | |
| KAc | potassium acetate | |
| KBA | 3-ketobuyyraldehyde | |
| KBr | potassium bromide | |
| KCC | potassium chlorochromate | |
| KCl | potassium chloride | |
| KCN | potasssium cyanide | |
| KDO | 2-keto-3-deoxyoctonate | |
| KH2PO4 | potassium phosphate (monobasic) | |
| Kinase buffer | magnesium chloride, dithiothreitol,
spermidine,
tris[hydroxymethyl]-aminomethane |
|
| KOAc | potassium acetate | |
| KOH | potassium hydroxide | |
| KPi | potassium phosphate | |
| Kr | krypton | |
| L-Glut | L-glutamine | |
| La | lanthanum | |
| LB | sodium chloride, yeast extract, tryptone and/or Lennox L Broth Base | |
| LBB | Leucoberbelin blue | |
| LCR | vincristine sulfate | |
| LDA | lithium diisopropylamide | |
| LDH | lactic dehydrogenase | |
| LDH/PK | crystalline suspension in ammonium sulfate containing 700 units per ml of pyruvate kinase, and 1000 units per ml of lactic dehydrogenase. | |
| Li | lithium | |
| LiAc | lithium acetate | |
| LiCl | lithium chloride | |
| LiOAc | lithium acetate | |
| LH | luteinizing hormone | |
| LH-RH | luteinizing hormone releasing hormone | |
| Lr | lawrencium | |
| LTA | lead(IV)acetate | |
| LTH | luteotropic hormone | |
| Lu | lutetium |
