• L-Leucinamide,N,N-dimethyl-L-isoleucyl-(3S)-3-hydroxy-L-leucyl-N-[2-(4-hydroxyphenyl)ethenyl]-,cyclic (2®3)-ether
• 25350-22-5
• C28H44 N4 O4
• 500.6734
• .

• L-Iditol
• 488-45-9
• C6H14 O6
• 182.17
• .

• L-Ornithinamide,N-[(phenylmethoxy)carbonyl]glycyl-L-phenylalanyl-N5-(aminocarbonyl)-N-(4-nitrophenyl)-(9CI)
• 83575-50-2
• C31H35 N7 O8
• 0
• .

• L-Cysteine, N-acetyl-,(1-carboxy-1-propenyl)carbamodithioate (ester), 4'-ester with5-[6-O-acetyl-3-O-[2,6-dideoxy-3-O-methyl-4-C-[1-(2-methyl-1-oxopropoxy)ethyl]-a-L-lyxo-hexopyranosyl]-b-D-allopyranosyl]-2-amino-5-hydroxy-3,6-dioxo-1-cyclohexene-1-carboxylicacid (9CI)
• 102301-13-3
• C38H53 N3 O20 S2
• 935.9655
• .

• L-Histidine,N-[N-[N-[N2-[N-[N-[N-[N-[N-(N-L-methionyl-L-isoleucyl)-L-a-glutamyl]-L-a-glutamyl]-L-a-aspartyl]-L-phenylalanyl]-L-leucyl]-L-arginyl]-L-leucyl]-L-seryl]-(9CI)
• 158379-16-9
• C61H96 N16 O19 S
• 0
• .

• L-Proline,1-(2-furanylcarbonyl)-
• 117918-56-6
• C10H11 N O4
• 0
• .

• L-Phenylalanine,4-amino-3-hydroxy-
• 74923-08-3
• C9H12 N2 O3
• 0
• .

• L-Lysine,N-acetyl-L-norleucyl-L-a-aspartyl-L-histidyl-D-phenylalanyl-L-arginyl-L-tryptophyl-, (2?7)-lactam
• 189691-06-3
• C₅₀H₆₈N₁₄O₁₀
• 1025.1627
• .

• Listeriolysin
• 72270-41-8
• 0
• .

• Lead azide (Pb(N3)2)
• 13424-46-9
• N6Pb
• 236-542-1
• 291.25
• .

• L-Glutamine,N2-[(phenylmethoxy)carbonyl]-, pentachlorophenyl ester (9CI)
• 13673-51-3
• C19H15 Cl5 N2 O5
• 237-155-0
• 528.5978
• .

• L-Glutamic acid,L-phenylalanyl-L-arginyl-L-arginyl-L-threonyl-L-threonyl-L-prolyl-L-prolyl-L-threonyl-L-threonyl-L-alanyl-L-threonyl-L-prolyl-L-isoleucyl-L-arginyl-L-histidyl-L-arginyl-L-prolyl-L-arginyl-L-prolyl-L-tyrosyl-L-prolyl-L-prolyl-L-asparaginyl-L-valylglycyl-L-a-glutamyl- (9CI)
• 107978-80-3
• C139H219 N45 O39
• 0
• .

• L-Valine,N-[N2-[N-[N2-(N-L-lysyl-L-threonyl)-L-arginyl]-L-a-glutamyl]-L-lysyl]- (9CI)
• 78228-88-3
• C32H61 N11 O10
• 0
• .

• Laminaria cloustonii,ext
• 90046-11-0
• 289-979-5
• 0
• .

• Leucine,N-[(1-piperidinyloxy)carbonyl]-
• 26359-46-6
• C12H22 N2 O4
• .

• L-Arginine,monoanhydride with 5'-adenylic acid (9CI)
• 15470-08-3
• C16H26 N9 O8 P
• 0
• .

• L-Prolinamide,N-(4-methoxy-1,4-dioxobutyl)-L-alanyl-L-alanyl-N-[(1S)-3-chloro-1-methyl-2-oxopropyl]-
• 111682-13-4
• C20H31 Cl N4 O7
• 474.94
• .

• L-Prolinamide,N-[(hexahydro-1-methyl-2,6-dioxo-4-pyrimidinyl)carbonyl]-L-histidyl-N-methyl-,(S)- (9CI)
• 128055-84-5
• C18H25 N7 O5
• 419.435
• .

• L-Alanine,N-(3,4-dihydro-3,3-dimethyl-1-isoquinolinyl)-
• 187884-90-8
• C14H18 N2 O2
• 0
• .

• L-Aspartic acid,N-octadecyl-
• 70021-38-4
• C22H43 N O4
• 274-256-9
• 385.58112
• .

• L-Norleucine, glycyl-
• 19257-04-6
• C₈H₁₆N₂O₃
• 188.2242
• .

• L-Arginine,compounds,hydroxybutanedioate
• 41989-03-1
• C₁₀H₂₀N₄O₇
• 255-608-0
• 308.2884
• .

• L-Cysteine,N-acetyl-S-(carboxymethyl)-
• 26177-54-8
• C7H11 N O5 S
• 0
• .

• L-Glucose,2-[[[(2-chloroethyl)nitrosoamino]carbonyl]amino]-2-deoxy-
• 69839-80-1
• C9H16 Cl N3 O7
• 313.6922
• .

• L-Mannitol
• 643-01-6
• C₆H₁₄O₆
• 182.17176
• .

• L-Leucine, homopolymer
• 25248-98-0
• C6 H13 N O2
• 0
• .

• L-Alanine,N,N-bis(carboxymethyl)-, sodium salt (1:3)
• 170492-24-7
• C7H11 N O6 . 3 Na
• .

• L-Phenylalanine,N,N-dimethyl-
• 17469-89-5
• C₁₁H₁₅NO₂
• 193.24
• .

• L-Glutamic acid,L-seryl-L-alanyl-L-seryl-L-prolylglycyl-L-leucyl-L-prolyl-L-lysylglycyl-L-a-glutamyl-L-lysyl-L-a-glutamyl-L-glutaminyl-L-glutaminyl-L-a-glutamyl-L-alanyl-L-isoleucyl-L-a-glutamyl-L-histidyl-L-isoleucyl-L-a-aspartyl- (9CI)
• 157849-35-9
• C101H162 N28 O39
• 0
• .

• L-Glutamic acid,N-(1-deoxy-D-fructos-1-yl)-
• 31105-01-8
• C11H19 N O9
• 309.27
• .

• L-Proline, 1-methyl-
• 475-11-6
• C₆H₁₁NO₂
• 147.17
• .

• L-Lysine, N6-benzoyl-
• 1219-46-1
• C13H18 N2 O3
• 250.2936
• .

• L-Leucine, 3-hydroxy-(9CI)
• 5817-22-1
• C6H13 N O3
• 0
• .

• L-Iduronic acid
• 2073-35-0
• C6H10 O7
• 194.14
• .

• Lup-20(29)-en-28-oicacid, 3-[(2-O-b-D-glucopyranosyl-b-D-glucopyranosyl)oxy]-, (3b)- (9CI)
• 135757-66-3
• C42H68 O13
• 0
• .

• L-Lysine,N2,N6-di-D-gluconoyl- (9CI)
• 94071-02-0
• C18H34 N2 O14
• 301-802-6
• 502.46756
• .

• Lawrencium
• 22537-19-5
• Lr
• 0
• .

• L-Glutamic acid,5-(1-methylethyl) ester
• 84604-40-0
• C8H15 N O4
• 283-320-5
• 233.2631
• .

• Lanolin,wax
• 68201-49-0
• 232-348-6
• 0
• .

• L-Lysine,N6-[(phenylmethoxy)carbonyl]-, phenylmethyl ester, hydrochloride (1:1)
• 6366-70-7
• C₂₁H₂₆N₂O₄^.HCl
• 228-859-9
• 406.90
• .

• L-Norleucine,6-(diethoxyphosphinyl)-
• 184095-99-6
• C10H22 N O5 P
• 268.267081
• .

• L-Arginine,L-tyrosyl-L-alanylglycyl-L-phenylalanyl-L-leucyl-
• 108524-90-9
• C35H51 N9 O8
• .

• L-Phenylalanine,N-[N-(2-methyl-1-oxo-2-propenyl)glycyl]-, 4-nitrophenyl ester (9CI)
• 64325-18-4
• C21H21 N3 O6
• 411.4079
• .

• L-Methioninamide,L-arginyl-L-prolylglycyl-L-prolyl-L-prolylglycyl-L-leucyl-L-glutaminylglycyl-L-arginyl-L-leucyl-L-glutaminyl-L-arginyl-L-leucyl-L-leucyl-L-glutaminyl-L-alanyl-L-asparaginylglycyl-L-asparaginyl-L-histidyl-L-alanyl-L-alanylglycyl-L-isoleucyl-L-leucyl-L-threonyl-(9CI)
• 202801-92-1
• C126H215 N45 O34 S
• 0
• .

• Lutetium arsenide(LuAs)
• 12005-94-6
• AsLu
• 234-477-3
• 249.8886
• .

• L-Phenylalaninamide, L-a-aspartyl-L-seryl-D-tryptophyl-L-valyl-D-tryptophyl-L-leucyl-(9CI)
• 129296-61-3
• C49H62 N10 O10
• .

• Lutetium, isotope ofmass 179
• 15755-89-2
• Lu
• 179
• .

• Lanosta-7,9(11),24-trien-26-oicacid, 15,22-bis(acetyloxy)-3-hydroxy-, (3a,15a,22S,24E)- (9CI)
• 112667-14-8
• C34H50 O7
• .

• L-Glutamic acid, L-a-glutamylglycyl-L-valyl-L-prolyl-L-seryl-L-threonyl-L-alanyl-L-isoleucyl-L-arginyl-L-a-glutamyl-L-isoleucyl-L-seryl-L-leucyl-L-leucyl-L-lysyl-(9CI)
• 126675-53-4
• C76H132 N20 O26
• 0
• .

• L-Cysteine,N-acetyl-S-(phenylmethyl)-
• 19542-77-9
• C12H15 N O3 S
• 253.3174
• .