• L-Threonine,L-phenylalanyl-L-leucyl-L-tryptophyl-L-lysyl-L-a-aspartyl-L-leucyl-L-glutaminyl-L-arginyl-L-valyl-L-arginylglycyl-L-a-aspartyl-L-leucylglycyl-L-alanyl-L-alanyl-L-leucyl-L-a-aspartyl-L-seryl-L-tryptophyl-L-isoleucyl-
• 109796-64-7
• C118H182 N32 O32
• 0
• .

• L-Leucine,L-lysyl-L-lysyl-L-leucyl-L-leucyl-L-lysyl-L-lysyl-L-leucyl-L-lysyl-L-lysyl-L-leucyl-L-leucyl-L-lysyl-L-lysyl-(9CI)
• 141644-08-8
• C84H164 N22 O15
• .

• Leucogenenol (8CI,9CI)
• 29101-95-9
• C₁₈H₂₅NO₈
• 0
• .

• L-Leucinamide,L-tyrosyl-D-alanylglycyl-L-phenylalanyl-N-[6-(2,3,5,6,8,9,11,12-octahydro-7H-1,4,10,13,7-benzotetraoxaazacyclopentadecin-7-yl)-6-oxohexyl]-,monohydrochloride (9CI)
• 145594-25-8
• C49H69 N7 O11 . Cl H
• 0
• .

• L-Ornithine,N5-[imino(nitroamino)methyl]-, methyl ester, hydrochloride (1:1)
• 51298-62-5
• C₇H₁₆ClN₅O₄
• 257-116-1
• 269.68604
• .

• L-Tyrosine,N-[N-[N-(N-formyl-L-norleucyl)-L-leucyl]-L-phenylalanyl]- (9CI)
• 100007-40-7
• C31H42 N4 O7
• 582.69
• .

• L 1953
• 25101-28-4
• C₂₄H₃₄O₄
• 0
• .

• L-Threonine,(3R)-N-acetyl-3-hydroxy-L-leucyl-(aR)-a-hydroxybenzenepropanoyl-2,3-didehydro-N-methylalanyl-L-alanyl-N-methyl-L-alanyl-(3R)-3-[[(2S,3R)-3-hydroxy-4-methyl-1-oxo-2-[(1-oxopropyl)amino]pentyl]oxy]-L-leucyl-N,O-dimethyl-,(7®1)-lactone (9CI)
• 107530-18-7
• C49H75 N7 O15
• .

• Lanost-8-ene-2,3,12,21,24,25-hexol,3-[5-[(carboxymethyl)amino]-3-hydroxy-3-methyl-5-oxopentanoate], (2a,3b,12a,24R)- (9CI)
• 126882-56-2
• C38H63 N O11
• 709.9069
• .

• L-Leucinamide,N-[(4-hydroxyphenyl)acetyl]-D-tryptophyl-L-phenylalanyl-D-tryptophyl-L-leucyl-(9CI)
• 118121-70-3
• C51H60 N8 O7
• .

• L-Proline, 5-oxo-,2-phenylethyl ester
• 60555-58-0
• C13H15 N O3
• 262-292-8
• 233.2631
• .

• L-Cysteine,N-acetyl-S-[(1R,2S,3R,6E,8S,9S,10S,12R,16R)-2-[[(6-deoxy-2,3-di-O-methyl-b-D-allopyranosyl)oxy]methyl]-3-ethyl-2-hydroxy-8,10,12-trimethyl-5,13-dioxo-9-[[3,4,6-trideoxy-3-(dimethylamino)-b-D-xylo-hexopyranosyl]oxy]-4,17-dioxabicyclo[14.1.0]heptadec-6-en-15-yl]-(9CI)
• 121842-66-8
• C42H70 N2 O16 S
• .

• L-Tyrosinamide,L-alanyl-L-valyl-L-seryl-L-a-glutamyl-L-isoleucyl-L-glutaminyl-L-phenylalanyl-L-norleucyl-L-histidyl-L-asparaginyl-L-leucylglycyl-N6-(4-azido-2-nitrophenyl)-L-lysyl-L-histidyl-L-leucyl-L-seryl-L-seryl-L-norleucyl-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-(9CI)
• 122633-61-8
• C191H295 N59 O52
• 0
• .

• LY 270766 (9CI)
• 152923-58-5
• .

• Lupolen A 2910M
• 26355-78-2
• C₁₂H₂₀O₄
• 228.2848
• .

• L-Cysteine,S-[(acetylamino)methyl]-N-[N-[N-[N-[N-[(1,1-dimethylethoxy)carbonyl]-L-threonyl]-L-phenylalanyl]-L-threonyl]-L-seryl]-,2-[[[4-(phenylazo)phenyl]methyl]sulfonyl]ethyl ester (9CI)
• 76408-66-7
• C46H62 N8 O14 S2
• 278-446-2
• 1015.15968
• .

• L-Proline,1-[(2R,3S)-3-[[(2S)-4-amino-1,4-dioxo-2-[[(phenylmethoxy)carbonyl]amino]butyl]amino]-2-hydroxy-4-phenylbutyl]-,1,1-dimethylethyl ester
• 127749-91-1
• C31H42 N4 O7
• 582.6878
• .

• L-Aspartic acid,N-[(1,1-dimethylethoxy)carbonyl]-O-sulfo-L-tyrosyl-L-norleucylglycyl-L-tryptophyl-L-norleucyl-,61-(2-phenylethyl) ester, ammonium salt (1:2)
• 143188-59-4
• C51H67 N7 O15 S . 2 H3 N
• 1084.24
• .

• L-Glutamic acid,N-[(phenylmethoxy)carbonyl]-, 5-methyl ester
• 4652-65-7
• C₁₄H₁₇NO₆
• 295.2879
• .

• L-Alanine,N,N-bis(2-chloroethyl)-, hydrochloride (9CI)
• 2752-21-8
• C7H13 Cl2 N O2 . Cl H
• 0
• .

• L-Proline,1-[[(2R,3R)-3-nonyl-2-oxiranyl]carbonyl]-, methyl ester
• 123889-00-9
• C18H31 N O4
• 325.443
• .

• L-threo-Pentaric acid,3-carboxy-2,3-dideoxy-
• 6061-97-8
• C6H8 O7
• 0
• .

• Lanost-7-ene-3,21,24,25-tetrol,21,23-epoxy-, (3b,13a,14b,17a,20S,21R,23R,24S)-
• 25278-95-9
• C30H50 O5
• 490.715
• .

• L-Prolinamide,N,N-dimethyl-L-valyl-L-valyl-N-methyl-L-valyl-L-prolyl-N-(phenylmethyl)-
• 159776-69-9
• C35H56 N6 O5
• 640.8563
• .

• L-Tyrosine,N-[(phenylmethoxy)carbonyl]-, pentachlorophenyl ester (9CI)
• 55593-07-2
• C23H16 Cl5 N O5
• 259-720-0
• 563.64184
• .

• L-Proline,1-(1-oxohexadecyl)-
• 59441-32-6
• C₂₁H₃₉NO₃
• 261-763-5
• 353.54
• .

• L-Phenylalanine,N-[(1,1-dimethylethoxy)carbonyl]-, 4-nitrophenyl ester
• 7535-56-0
• C₂₀H₂₂N₂O₆
• 231-404-7
• 386.40
• .

• L-Lysine,N-acetyl-L-phenylalanyl-
• 14287-21-9
• C₁₇H₂₅N₃O₄
• 335.4
• .

• L-Isoleucinamide,L-tyrosyl-D-leucyl-L-phenylalanyl-L-alanyl-L-a-aspartyl-L-valyl-L-alanyl-L-seryl-L-threonyl-L-isoleucylglycyl-L-a-aspartyl-L-phenylalanyl-L-phenylalanyl-L-histidyl-L-seryl-
• 154722-68-6
• C91H128 N20 O25
• 0
• .

• L-Norvaline, 4-chloro-,(4S)-
• 76265-38-8
• C5H10 Cl N O2
• 0
• .

• L-Threonine,O-phosphono-
• 1114-81-4
• C4H10 N O6 P
• 214-217-5
• 199.1
• .

• l-Carrageenan
• 9064-57-7
• C₂₄H₃₆O₃₉S₆
• 232-953-5
• 1140.90924
• .

• L-Arginine,L-lysyl-L-prolyl-
• 41961-57-3
• C17H33 N7 O4
• 0
• .

• Lanosta-7,9(11),24-trien-26-oicacid, 3,22-bis(acetyloxy)-15-hydroxy-, (3a,15a,22S,24E)- (9CI)
• 112790-45-1
• C34H50 O7
• .

• Lutetium vanadium oxide(LuVO4)
• 13568-56-4
• O
• 236-979-8
• 289.9061
• .

• L-Phenylalanine,1-[[[4-(phenylazo)phenyl]methoxy]carbonyl]-L-prolyl- (9CI)
• 35242-80-9
• C28H28 N4 O5
• 252-460-9
• 500.54572
• .

• L-Arginine mono((R)-thiazolidine-4-carboxylate)
• 97358-56-0
• C₁₀H₂₁N₅O₄S
• 306-631-0
• 307.36984
• .

• L-Leucine, labeled withcarbon-14
• 70-45-1
• C6H13 N O2
• 143.28
• .

• L-Serinamide,L-arginyl-L-arginyl-L-lysyl-L-tryptophyl-L-glutaminyl-L-lysyl-L-threonylglycyl-L-histidyl-L-alanyl-L-valyl-L-arginyl-L-alanyl-L-isoleucylglycyl-L-arginyl-L-leucyl-L-seryl-L-seryl-(9CI)
• 120396-89-6
• C98H169 N39 O25
• 0
• .

• L-Leucine,N2-[(2S)-2,6-diaminohexyl]-L-lysyl-L-prolyl-L-tyrosyl-L-isoleucyl-
• 139026-66-7
• C38H66 N8 O7
• 746.98
• .

• L-Alanine,N-[N-[N-acetyl-O-[2-(acetylamino)-2-deoxy-a-D-galactopyranosyl]-L-threonyl]-L-alanyl]-, methylester (9CI)
• 125316-77-0
• C21H36 N4 O11
• 520.5307
• .

• Lectin (Laburnumalpinum isoform I protein moiety) (9CI)
• 142661-64-1
• 0
• .

• L-Phenylalanine,L-leucyl-
• 3063-05-6
• C15H22 N2 O3
• 278.35
• .

• L-Arabinose, O-b-D-glucopyranosyl-(1®3)-O-b-D-glucopyranosyl-(1®4)-O-[b-D-glucopyranosyl-(1®2)]- (9CI)
• 23643-62-1
• C23H40 O20
• .

• Lup-20(29)-en-28-oicacid, 3,23-dihydroxy-, O-6-deoxy-a-L-mannopyranosyl-(1®4)-O-b-D-glucopyranosyl-(1®6)-b-D-glucopyranosyl ester, (3b,4a)- (9CI)
• 162341-28-8
• C48H78 O18
• .

• Lead, isotope of mass208
• 13966-28-4
• Pb
• 0
• .

• L-Glutamic acid,N-acetyl-, dilithium salt (9CI)
• 32093-27-9
• C7H11 N O5 . 2 Li
• 250-919-8
• 201.03206
• .

• L-Galactose-6-t-5-C-t,6-deoxy- (9CI)
• 313354-88-0
• C6H10 O5 T2
• 168.1727
• .

• L-Histidine,1-(2-hydroxypropyl)-
• 81790-79-6
• C9H15 N3 O3
• 0
• .

• Lanosta-8,24-dien-3-ol,(3b,13a,14b,17a)-
• 514-47-6
• C30H50 O
• 0
• .