• L-Leucine,L-lysyl-L-leucyl-L-alanyl-L-lysyl-L-lysyl-L-leucyl-L-alanyl-L-lysyl-L-lysyl-L-leucyl-L-alanyl-L-lysyl-L-leucyl-L-alanyl-L-lysyl-L-alanyl-(9CI)
• 148080-19-7
• C87H166 N24 O18
• .

• L-Leucinamide,L-arginyl-L-glutaminyl-L-glutaminyl-L-prolyl-L-phenylalanyl-L-valyl-L-prolyl-L-arginyl-
• 143907-80-6
• C52H86 N18 O11
• .

• L-Leucine, L-valyl-
• 3989-97-7
• C11H22 N2 O3
• 223-634-1
• 230.3
• .

• L-Tryptophan,N-acetyl-, monolithium salt (9CI)
• 60780-06-5
• C13H14 N2 O3 . Li
• 262-427-0
• 252.19492
• .

• L-Proline,1-[N-[N-(N-L-tyrosyl-D-methionyl)glycyl]-L-phenylalanyl]- (9CI)
• 64267-98-7
• C30H39 N5 O7 S
• 0
• .

• L-Arginine maleate
• 93778-36-0
• C₁₀H₁₈N₄O₆
• 298-172-7
• 290.27312
• .

• L-erythro-L-glycero-D-altro-7-Trideculo-7,4-furanosonicacid,2,7-anhydro-3,4-di-C-carboxy-8,9,10,12,13-pentadeoxy-10-methylene-12-(phenylmethyl)-,11-acetate 5-[(2E,4S,6S)-4,6-dimethyl-2-octenoate], (7S)-
• 142561-96-4
• C35H46 O14
• 759.7
• .

• Lanthanum arsenide(LaAs)
• 12255-04-8
• AsLa
• 235-502-0
• 213.8271
• .

• L-Alanine,N-benzoyl-N-(3-chloro-4-fluorophenyl)-, 1-methylethyl ester
• 57973-67-8
• C19H19 Cl F N O3
• 261-051-4
• 363.81
• .

• L-Methionine,N-[(9Z)-1-oxo-9-octadecen-1-yl]-
• 51570-50-4
• C23H43 N O3 S
• 257-289-3
• 413.65742
• .

• L-Alanine,5-oxo-L-prolyl-L-glutaminyl-
• 21477-57-6
• C13H20 N4 O6
• 0
• .

• L-Tyrosine,N-(9,10-dihydro-4-hydroxy-9,10-dioxo-1-anthracenyl)-, hydrazide
• 156074-07-6
• C23H19 N3 O5
• .

• L-Leucine,N2-acetyl-L-arginyl-L-arginyl-L-prolyl-L-tyrosyl-L-isoleucyl-
• 74853-69-3
• C₄₀H₆₆N₁₂O₉
• 859.027
• .

• L-Aspartic acid,N-(aminocarbonyl)-, calcium salt (1:1)
• 16649-79-9
• C5H8 N2 O5 . Ca
• 240-698-6
• 214.18954
• .

• L-Alanine,L-alanyl-L-alanyl-
• 5874-90-8
• C₉H₁₇N₃O₄
• 227-538-0
• 231.25
• .

• L-Tyrosine,N-(tetrahydro-1,1-dioxido-3-thienyl)-
• 415919-39-0
• C13H17 N O5 S
• 299.34
• .

• L-Glutamine,N2-(1-deoxy-D-mannitol-1-yl)-
• 87084-52-4
• C11H22 N2 O8
• 310.3
• .

• L-Valinamide,L-valyl-L-valyl-L-valyl-N-[(1S)-1-formyl-2-phenylethyl]-
• 107191-87-7
• C29H47 N5 O5
• .

• Lup-20(29)-en-28-oicacid, 3,23-dihydroxy-, 6-O-b-D-glucopyranosyl-b-D-glucopyranosyl ester, (3b,4a)-
• 145578-46-7
• C42H68 O14
• .

• Latosillan (9CI)
• 83712-86-1
• C₃₂H₅₅NO₂₃
• 0
• .

• Lead, ion (Pb2+)
• 14280-50-3
• Pb
• 207.1989
• .

• Lanthanum, isotope ofmass 137
• 14834-69-6
• La
• 136.9065
• .

• L-Arginine,N2-[1-[N2-[N-[N2-[1-(N2-L-threonyl-L-lysyl)-L-prolyl]-L-lysyl]-L-threonyl]-L-lysyl]-L-prolyl]-(9CI)
• 88171-14-6
• C42H78 N14 O11
• 0
• .

• Lithium,[(methylthio)methyl]- (8CI,9CI)
• 10415-47-1
• C2H5 Li S
• .

• L-Prolinamide,N-methyl-L-phenylalanyl-N-[(3R,4S,7S)-3-(1-methylethyl)-7-(2-methylpropyl)-5,8-dioxo-2-oxa-6,9-diazabicyclo[10.2.2]hexadeca-10,12,14,15-tetraen-4-yl]-(9CI)
• 22400-56-2
• C35H47 N5 O5
• 0
• .

• L-Alanine,N-[(2S)-3-(acetylthio)-2-(1,3-benzodioxol-5-ylmethyl)-1-oxopropyl]-,phenylmethyl ester
• 135038-57-2
• C23H25 N O6 S
• 0
• .

• L-Histidine,N-[(1,1-dimethylethoxy)carbonyl]-1-[2,2,2-trifluoro-1-[[(phenylmethoxy)carbonyl]amino]ethyl]-
• 7682-45-3
• C21H25 F3 N4 O6
• 231-684-0
• 486.4416096
• .

• Laminin 5 (mouse a3A-chain precursor) (9CI)
• 170834-93-2
• 0
• .

• L-Methioninamide,L-seryl-L-methionyl-L-a-glutamyl-L-histidyl-L-phenylalanyl-L-arginyl-L-tryptophylglycyl-L-lysyl-L-prolyl-(8CI,9CI)
• 28254-73-1
• C63H93 N19 O14 S2
• .

• L-Threonine,N-[(1H-purin-6-ylamino)carbonyl]- (9CI)
• 33422-66-1
• C10H12 N6 O4
• 0
• .

• L-Arginine,N2-(1-oxotetradecyl)-
• 60372-80-7
• C20H40 N4 O3
• 262-200-6
• 384.5566
• .

• L-Ornithine,N5-(2,4-dinitrophenyl)-
• 10457-27-9
• C11H14 N4 O6
• 0
• .

• L-Alanine,3-[[2-[(5R)-3-[4-(aminoiminomethyl)phenyl]-4,5-dihydro-5-isoxazolyl]acetyl]amino]-N-(butoxycarbonyl)-
• 170902-52-0
• C20H27 N5 O6
• 433.4583
• .

• L-Prolinamide,N-[(6-oxo-2-piperidinyl)carbonyl]-L-histidyl- (9CI)
• 57884-93-2
• C17H24 N6 O4
• 0
• .

• Lup-20(29)-en-28-al, 3beta-hydroxy-
• 13159-28-9
• C₃₀H₄₈O₂
• 440.70092
• .

• L-Glutamic acid,L-arginyl-L-lysyl-L-arginyl-L-alanyl-L-arginyl-L-lysyl-
• 82801-73-8
• C₃₈H₇₄N₁₈O₁₀
• 943.1088
• .

• L-xylo-2-Hexulosonicacid, hydrate (9CI)
• 342385-52-8
• C₆H₁₀O₇
• 208-403-5
• 193.132
• .

• L-Mannose,4,6-dideoxy-4-[(2-methoxy-1-oxopropyl)amino]-3-C-methyl-2-O-methyl-
• 92355-88-9
• C12H23 N O6
• 0
• .

• L-Valine,N-[N-[N-[(1,1-dimethylethoxy)carbonyl]-threo-3-fluoro-L-a-glutamyl]-L-a-glutamyl]-, labeled with tritium(9CI)
• 127708-86-5
• C20H32 F N3 O10
• 493.4806
• .

• Leucomycin V,9-deoxy-9-oxo-, 4B-(3-methylbutanoate)
• 20283-69-6
• C40H65 N O14
• 0
• .

• L-Alanine,N-carboxy-3-(methylamino)-
• 129118-73-6
• C5H10 N2 O4
• 162.1439
• .

• L-Cysteine,S-(carboxymethyl)-N-[(3a,5b,7b)-3,7-dihydroxy-24-oxocholan-24-yl]- (9CI)
• 119059-81-3
• C29H47 N O7 S
• 0
• .

• L-Aspartic acid,N-D-gluconoyl- (9CI)
• 93980-75-7
• C10H17 N O10
• 301-055-6
• 311.24268
• .

• L-Tyrosine, 3-methoxy-
• 300-48-1
• C₁₀H₁₃NO₄
• 211.21
• .

• Leach residues,precious metal smelting scrap
• 100995-79-7
• 309-770-5
• .

• L-arabino-2-Heptulosonicacid, 5-(acetylamino)-3,5-dideoxy-
• 17048-96-3
• C9H15 N O7
• 0
• .

• L-Tyrosine,N-[N2-[N2-[N-[N-[(1,1-dimethylethoxy)carbonyl]-L-valyl]-O-(phenylmethyl)-L-seryl]-L-glutaminyl]-L-asparaginyl]-,(4-bromophenyl)methyl carbonate (ester) (9CI)
• 138865-76-6
• C46H58 Br N7 O14
• 0
• .

• L-Glutamic acid,N-[[5-[2-[(6R)-2-amino-3,4,5,6,7,8-hexahydro-4-oxopyrido[2,3-d]pyrimidin-6-yl]ethyl]-2-thienyl]carbonyl]-
• 127228-54-0
• C19H23 N5 O6 S
• .

• L-Glutamic acid,N-[4-[2-[(6R)-2-amino-3,4,5,6,7,8-hexahydro-4-oxopyrido[2,3-d]pyrimidin-6-yl]ethyl]benzoyl]-
• 106400-81-1
• C21H25 N5 O6
• 443.4531
• .

• L-Alanine,N-[(1,1-dimethylethoxy)carbonyl]-, 4-methyl-2-oxo-2H-1-benzopyran-7-yl ester
• 138474-38-1
• C18H21 N O6
• 0
• .