• L-Valine,N-[(1,1-dimethylethoxy)carbonyl]-L-phenylalanyl-(aZ)-a,b-didehydrophenylalanyl-, methylester (9CI)
• 110771-17-0
• C29H37 N3 O6
• 0
• .

• L-Cysteine,S-ethyl-N-(1-nitro-9-acridinyl)-, methyl ester, monohydrochloride (9CI)
• 83550-93-0
• C19H19 N3 O4 S . Cl H
• 0
• .

• Lead, isotope of mass204
• 13966-26-2
• Pb
• 0
• .

• L-Leucinamide,D-alanylglycyl-L-phenylalanyl- (9CI)
• 84145-88-0
• C20H31 N5 O4
• 0
• .

• L-Homocysteine,S-propyl-
• 13073-19-3
• C7H15 N O2 S
• 0
• .

• Leiurotoxin I (reduced)(9CI)
• 116235-63-3
• C142H243 N45 O39 S7
• 0
• .

• Lead(Ⅲ) oxide
• 1314-27-8
• O3Pb2
• 462.4
• .

• L-Cysteine,(2-chloroethyl)carbamate (ester) (9CI)
• 53330-03-3
• C6H11 Cl N2 O3 S
• 0
• .

• L-Mannopyranose,2-[[[(2-chloroethyl)nitrosoamino]carbonyl]amino]-2-deoxy-
• 102492-21-7
• C9H16 Cl N3 O7
• .

• L-Arginine,compounds,mono-4- thiazolidinecarboxylate
• 57631-15-9
• C₁₀H₂₁N₅O₄S
• 260-857-3
• 307.36984
• .

• L-Phenylalanine,N-[5-[4-(aminoiminomethyl)phenyl]-1-oxopentyl]-L-a-aspartyl- (9CI)
• 145643-15-8
• C25H30 N4 O6
• .

• L-Asparagine, glycyl-
• 1999-33-3
• C₆H₁₁N₃O₄
• 217-881-4
• 189.1692
• .

• L-Cysteine,S-(carboxymethyl)-
• 638-23-3
• C₅H₉NO₄S
• 211-327-5
• 179.19426
• .

• L-Alanine,L-arginylglycyl-L-a-aspartyl-
• 93674-98-7
• C15H27 N7 O7
• 0
• .

• L-Talose
• 23567-25-1
• C6H12 O6
• 245-744-9
• 180.1559
• .

• L-Glutamic acid,N-[4-[[(2,4-diamino-6-pteridinyl)methyl]amino]benzoyl]-, 5-(1,1-dimethylethyl)ester
• 95484-98-3
• C23H28 N8 O5
• 0
• .

• Lignin, hydrolytic
• 8072-93-3
• 0
• .

• L-Lysinamide,L-tyrosyl-L-alanyl-N-[4-[(aminoiminomethyl)amino]-1-(chloroacetyl)butyl]- (9CI)
• 123496-54-8
• C25H41 Cl N8 O5
• 0
• .

• L-Lysine,N2,N2-dimethyl-N6-(1-oxododecyl)-
• 38079-57-1
• C20H40 N2 O3
• 253-772-8
• 356.5432
• .

• L-Arginine,N2-[N-[4-[[(2,4-diamino-6-pteridinyl)methyl]methylamino]benzoyl]-D-a-glutamyl]- (9CI)
• 129921-89-7
• C26H34 N12 O6
• 0
• .

• Luteinizinghormone-releasing factor (swine), acetate (1:?)
• 34973-08-5
• C₅₅H₇₅N₁₇O₁₃^.C₂H₄O₂
• 1227.89
• .

• L-Tryptophan,N-formyl-L-methionyl- (9CI)
• 60189-52-8
• C17H21 N3 O4 S
• 363.43
• .

• L-Valinamide,L-phenylalanyl-D-asparaginyl-L-a-glutamyl-L-phenylalanyl- (9CI)
• 137182-25-3
• C32H43 N7 O8
• 0
• .

• L-Phenylalanine,N-[(phenylmethoxy)carbonyl]-, 4-methyl-2-oxo-2H-1-benzopyran-7-yl ester
• 99678-18-9
• C27H23 N O6
• 0
• .

• Lead fluoroborate (Pb(BF4)2)
• 35254-34-3
• C₆H₇ClN₂OS
• 190.65058
• .

• L-Valine, L-a-aspartyl-L-alanyl-L-a-glutamyl-L-asparaginyl-L-leucyl-L-isoleucyl-L-a-aspartyl-L-seryl-L-phenylalanyl-L-glutaminyl-L-a-glutamyl-L-isoleucyl-
• 100111-07-7
• C65H101 N15 O25
• 1492.58
• .

• L-Aspartic acid,N-[2-(1H-indol-3-yl)acetyl]-
• 2456-73-7
• C14H14 N2 O5
• 0
• .

• Lactalbumins
• 9013-90-5
• n.a.
• 232-750-1
• 0
• .

• L-Alaninamide,4-chloro-D-phenylalanyl-L-alanyl-L-tyrosyl-D-tryptophyl-L-lysyl-L-valyl-L-alanyl-3-(2-naphthalenyl)-(9CI)
• 150155-67-2
• C59H72 Cl N11 O9
• .

• L-Arginine,N2-[[[5-(1,6-dihydro-6-oxo-8-phenyl-9H-purin-9-yl)pentyl]oxy]carbonyl]-
• 165198-52-7
• C23H30 N8 O5
• .

• Lu 302146
• 319932-32-6
• .

• L-Phenylalaninamide,L-arginyl-L-a-aspartyl-O-sulfo-L-tyrosyl-L-threonylglycyl-L-tryptophyl-L-norleucyl-L-a-aspartyl-
• 77568-41-3
• C55H74 N14 O18 S
• 0
• .

• Lup-20(29)-en-3-ol,3-benzoate, (3b)-
• 1617-69-2
• C37H54 O2
• 530.8235
• .

• L-Leucine,L-tyrosyl-(2R)-2,4-diaminobutanoylglycyl-L-phenylalanyl-, (5®2)-lactam (9CI)
• 77171-72-3
• C30H40 N6 O6
• 0
• .

• L-Cysteine,N-acetyl-S-(4-chloro-2,5-dihydro-2-hydroxy-5-oxo-3-furanyl)-, methyl ester
• 142762-80-9
• C10H12 Cl N O6 S
• .

• Lymphokine EDN (humanprotein moiety reduced) (9CI)
• 126098-39-3
• .

• L-Lysine, 5-hydroxy-,(5R)-
• 1190-94-9
• C6H14 N2 O3
• 214-726-2
• 162.187
• .

• L-Phenylalaninamide,N,N-dimethyl-L-isoleucyl-(2S,3S)-2-hydroxy-3-methylpentanoyl-N-methyl-L-isoleucyl-L-prolyl-(9CI)
• 155281-41-7
• C35H57 N5 O6
• .

• L-Prolinamide,L-tyrosyl-D-alanylglycyl-L-phenylalanyl-N-ethyl- (9CI)
• 64267-97-6
• C30H40 N6 O6
• 0
• .

• L-Cysteine,L-tyrosyl-D-alanylglycyl-L-phenylalanyl-L-leucyl-
• 110881-59-9
• C32H44 N6 O8 S
• 0
• .

• L-Norvaline, 5-hydroxy-
• 6152-89-2
• C5H11 N O3
• 0
• .

• L-Glutamic acid, polymer with 5-ethyl hydrogen L-glutamate
• 29323-51-1
• C₁₂H₂₂N₂O₈
• 0
• .

• L-Lysine,N2-[N-[N-[N-(N-L-a-aspartyl-O-phosphono-L-tyrosyl)-L-methionyl]-L-a-aspartyl]-L-methionyl]- (9CI)
• 158999-11-2
• C33H52 N7 O15 P S2
• 0
• .

• L-Lyxonamide,4-[[4-carboxy-1-oxo-2-[[(phenylmethoxy)carbonyl]amino]butyl]amino]-2,4,5-trideoxy-N-[2-methyl-1-[[(phenylmethyl)amino]carbonyl]propyl]-5-phenyl-2-[(phenylmethyl)amino]-,[1(S),4(S)]- (9CI)
• 161389-22-6
• C43H51 N5 O8
• 765.8937
• .

• L-Glutamic acid,N-[4-[[(2,4-diamino-6-quinazolinyl)methyl]methylamino]benzoyl]-
• 27244-49-1
• C22H24 N6 O5
• 452.4632
• .

• L-Leucine,L-histidyl-L-a-aspartyl-L-methionyl-L-asparaginyl-L-lysyl-L-valyl-L-leucyl-L-a-aspartyl-
• 118850-72-9
• C46H77 N13 O15 S
• 1084.25
• .

• L-Leucine,N-(1-oxooctadecyl)-
• 14379-43-2
• C24H47 N O3
• 397.63488
• .

• L-Phenylalanine,L-alanyl-L-valyl-L-seryl-L-a-glutamyl-L-isoleucyl-L-glutaminyl-L-phenylalanyl-L-methionyl-L-histidyl-L-asparaginyl-L-leucylglycyl-L-lysyl-L-histidyl-L-leucyl-L-seryl-L-seryl-L-methionyl-L-a-glutamyl-L-arginyl-L-valyl-L-a-glutamyl-L-tryptophyl-L-leucyl-L-arginyl-L-lysyl-L-lysyl-L-leucyl-L-glutaminyl-L-a-aspartyl-L-valyl-L-histidyl-L-asparaginyl-
• 12583-68-5
• C183H288 N54 O50 S2
• 3974.53152
• .

• L-Methioninamide,5-oxo-L-prolyl-L-prolyl-L-asparaginyl-L-prolyl-L-a-aspartyl-L-a-glutamyl-L-phenylalanyl-L-valylglycyl-L-leucyl- (9CI)
• 127633-77-6
• C55H81 N13 O17 S
• .

• L-Lyxose,5-deoxy-3-C-(hydroxymethyl)- (9CI)
• 20399-13-7
• C6H12 O5
• 0
• .