• Lithium isobutyrate
• 25179-23-1
• C4H7LiO2
• 94.038
• .

• L-threo-a-D-galacto-Octopyranoside, methyl7-chloro-6,7,8-trideoxy-6-[[[(2S,4R)-1-methyl-4-propyl-2-pyrrolidinyl]carbonyl]amino]-1-thio-,2-hexadecanoate, monohydrochloride
• 25507-04-4
• C₁₈H₃₃ClN₂O₅S^.HCl
• 461.44
• .

• L-Aspartic acid, homopolymer
• 25608-40-6
• (C₄H₇NO₄)_x
• 133.102
• .

• Lead iodate
• 25659-31-8
• I₂O₆Pb
• 247-168-3
• 557.01
• .

• lanthanum nitride
• 25764-10-7
• LaN
• 247-245-1
• 152.917
• .

• Lithium nitride (Li3N)
• 26134-62-3
• Li3N
• 247-475-2,
• 34.82
• .

• L-Arginine, methylester, hydrochloride (1:2)
• 26340-89-6
• C₇H₁₆N₄O₂^.2(HCl)
• 247-622-0
• 261.14942
• .

• L-Serine, ethyl ester,hydrochloride (1:1)
• 26348-61-8
• C₅H₁₁NO₃^.HCl
• 247-624-1
• 169.61
• .

• L-Lysine, methyl ester,hydrochloride (1:2)
• 26348-70-9
• C₇H₁₈C_l2N₂O₂
• 247-625-7
• 233.14
• .

• L-Ornithine,N5-(iminonitrosomethyl)-
• 151512-14-0
• C6H12 N4 O3
• 0
• .

• L-Phenylalaninamide,L-seryl-L-lysyl-L-prolyl-L-tyrosyl-L-methionyl-L-arginyl- (9CI)
• 144909-42-2
• C43H66 N12 O9 S
• 0
• .

• L-Arginine, L-prolyl-
• 2418-74-8
• C11H21 N5 O3
• 0
• .

• Lanost-8-en-3-one,7-ethoxy-24,25,26-trihydroxy-, (7a)- (9CI)
• 114567-44-1
• C32H54 O5
• .

• Lespeflan
• 146909-01-5
• 0
• .

• Luvimer 100P
• 159666-35-0
• 0
• .

• L-Leucine,N-1H-purin-6-yl- (9CI)
• 31981-63-2
• C11H15 N5 O2
• 249.2691
• .

• L-Norleucinamide,N-(1-piperazinylcarbonyl)-L-phenylalanyl-N-[(1S)-1-(cyclohexylmethyl)-3,3-difluoro-4-(methylamino)-2,4-dioxobutyl]-(9CI)
• 121584-64-3
• C32H48 F2 N6 O5
• .

• Lophophora
• 11006-96-5
• C₁₁H₁₇NO₃
• 211.25758
• .

• L-Prolinamide,1,2,3,6-tetrahydro-2,6-dioxo-4-pyrimidinecarbonyl-L-histidyl-
• 62305-86-6
• C16H19 N7 O5
• 0
• .

• L-Histidine,N-[[4-[bis(2-chloroethyl)amino]phenyl]acetyl]- (9CI)
• 2764-55-8
• C18H22 Cl2 N4 O3
• .

• L-Proline,N,N-dimethyl-L-valyl-L-valyl-N-methyl-L-valyl-L-prolyl-,(1S)-1-[[(2S)-2,5-dihydro-3-methoxy-5-oxo-2-(phenylmethyl)-1H-pyrrol-1-yl]carbonyl]-2-methylpropylester
• 123884-00-4
• C45H68 N6 O9
• 837.06
• .

• Lanthanum,tris(6,6,7,7,8,8,8-heptafluoro-2,2-dimethyl-3,5-octanedionato-kO3,kO5)-
• 19106-89-9
• C30H30 F21 La O6
• 242-822-4
• 1024.43
• .

• L-Isoleucine,N-(aminocarbonyl)-
• 26117-19-1
• C7H14 N2 O3
• 174.1977
• .

• L-Glutamine,N-[(1S,2R)-2-[(3S,5S)-3,5-dimethoxy-2-methyl-6-oxo-1-cyclohexen-1-yl]-2-hydroxy-1-methylethyl]-(9CI)
• 129421-88-1
• C17H28 N2 O7
• 0
• .

• L-Tyrosine,N-benzoyl-3-nitro-
• 59921-69-6
• C16H14 N2 O6
• 0
• .

• L-Asparagine,N2-[(2,4-dihydroxyphenyl)acetyl]- (9CI)
• 111872-98-1
• C12H14 N2 O6
• 283.23
• .

• L-Glutamine,N2-[(1-[1,1'-biphenyl]-4-yl-1-methylethoxy)carbonyl]-
• 25692-86-8
• C21H24 N2 O5
• 247-189-8
• 384.4257
• .

• L-Lysine,N2-[N-[N-[N-[N-(N-L-a-aspartyl-L-tyrosyl)-D-tryptophyl]-L-valyl]-D-tryptophyl]-D-tryptophyl]-(9CI)
• 146345-90-6
• C57H67 N11 O11
• 1082.209
• .

• L-Histidine,5-mercapto-N,N,3-trimethyl-
• 105496-34-2
• C9H15 N3 O2 S
• 0
• .

• L-Arginine,D-arginyl-L-arginyl-L-prolyl-(4R)-4-hydroxy-L-prolylglycyl-L-phenylalanyl-L-seryl-(4S)-4-propoxy-D-prolyl-(2S,3aS,7aS)-octahydro-1H-indole-2-carbonyl-
• 147267-10-5
• C59H95 N19 O14
• 1294.5045
• .

• L-Tryptophan,5-oxo-L-prolyl-
• 35937-24-7
• C16H17 N3 O4
• 0
• .

• L-Proline, 5-oxo-,hexyl ester
• 57352-24-6
• C11H19 N O3
• 260-689-0
• 213.27346
• .

• Larrea mexicana, ext.
• 84603-72-5
• 283-270-4
• 0
• .

• L-Histidine,L-histidyl-L-prolyl-L-phenylalanyl-L-histidyl-(2S,4S,5S)-5-amino-4-hydroxy-7-methyl-2-(1-methylethyl)octanoyl-L-isoleucyl-
• 91464-97-0
• C50H73 N13 O9
• 0
• .

• L-Phenylalaninamide,L-phenylalanyl-L-leucyl-L-arginyl-
• 80690-77-3
• C30H44 N8 O4
• 0
• .

• L-Phenylalaninamide,N-[5-[(3,3-dimethyl-1-oxobutyl)amino]-4-hydroxy-1-oxo-6-phenyl-2-(phenylmethyl)hexyl]-L-leucyl-,[2R-(2R*,4S*,5S*)]- (9CI)
• 129252-79-5
• C40H54 N4 O5
• 670.8806
• .

• L-Histidine, N-formyl-
• 15191-21-6
• C₇H₉N₃O₃
• 239-248-1
• 183.16
• .

• L-Valinamide,N2-acetyl-L-lysyl-L-arginyl-L-tyrosyl-L-asparaginyl-L-leucyl-L-threonyl-L-seryl-(9CI)
• 92355-86-7
• C45H76 N14 O13
• 0
• .

• L-Histidine,N-[(1,1-dimethylethoxy)carbonyl]-, hydrazide
• 42002-05-1
• C11H19 N5 O3
• 255-619-0
• 269.3
• .

• L-Phenylalanine,N-[N-[N-(N-formyl-L-methionyl)-L-isoleucyl]-L-leucyl]- (9CI)
• 112275-27-1
• C27H42 N4 O6 S
• 0
• .

• L-Cysteine, N-acetyl-,[2-[[2-(acetylamino)-2-carboxyethyl]thio]-1-carboxypropyl]carbamodithioate(ester), 4'-ester with 5-[6-O-acetyl-3-O-[2,6-dideoxy-3-O-methyl-4-C-[1-(2-methyl-1-oxobutoxy)ethyl]-a-L-lyxo-hexopyranosyl]-b-D-allopyranosyl]-2-amino-5-hydroxy-3,6-dioxo-1-cyclohexene-1-carboxylicacid (9CI)
• 101411-70-5
• C44H64 N4 O23 S3
• 1113.187
• .

• Lup-20(29)-en-3-one
• 1617-70-5
• C30H48 O
• 424.7
• .

• L-Leucinamide,L-arginyl-L-leucyl-L-seryl-L-a-glutamyl-L-a-aspartyl-L-methionyl-L-prolyl-L-alanyl-L-threonyl-L-prolyl-L-alanyl-L-a-aspartyl-L-glutaminyl-L-a-glutamyl-L-methionyl-L-tyrosyl-L-glutaminyl-L-prolyl-L-a-aspartyl-L-prolyl-L-a-glutamyl-L-a-glutamyl-L-methionyl-L-a-glutamyl-L-seryl-L-arginyl-L-threonyl-L-arginyl-L-tyrosyl-L-phenylalanyl-L-seryl-L-prolyl-L-arginyl-
• 131571-11-4
• C173H267 N49 O59 S3
• 0
• .

• L-Methionine,N-[(5-chloro-3,4-dihydro-3-methyl-1-oxo-1H-2-benzopyran-7-yl)carbonyl]-
• 64398-33-0
• C16H18 Cl N O5 S
• 0
• .

• L-Tyrosine,N-acetyl-3,5-diiodo-O-[(4-nitrophenyl)methyl]-
• 64700-62-5
• C18H16 I2 N2 O6
• 610.1384
• .

• L-Phenylalaninamide,3-(iodo-125I)-L-tyrosyl-L-leucyl-L-phenylalanyl-L-glutaminyl-L-prolyl-L-glutaminyl-L-arginyl-(9CI)
• 125009-85-0
• C54H75 I N14 O11
• 0
• .

• L-Threoninamide,L-prolyl-L-methionyl-L-lysyl-L-arginyl-L-leucyl-L-threonyl-L-leucylglycyl-L-asparaginyl-L-threonyl-(9CI)
• 137051-72-0
• C52H95 N17 O15 S
• 0
• .

• Leuciglumerum [INN-Latin]
• 41385-14-2
• C₁₂H₂₄N₂O₆
• 0
• .

• L-threo-Pentose,4-deoxy-
• 146566-10-1
• C5H10 O4
• 0
• .

• L-Prolinamide,5-oxo-L-prolyl-L-histidyl-N-[6-[[[(3',6'-dihydroxy-3-oxospiro[isobenzofuran-1(3H),9'-[9H]xanthen]-5-yl)amino]thioxomethyl]amino]hexyl]-(9CI)
• 77160-98-6
• C43H46 N8 O9 S
• 0
• .