| L-Arg(1)-Icatibant | DS3PC34VT4 | chemical |
| L-Asparaginyl-L-asparagine | VVS69S6623 | chemical |
| L-Aspartic acid 4-tert-butyl ester | X9KMG9QTL5 | chemical |
| L-Aspartic acid ?-methylamide | NC442Y2T68 | chemical |
| L-CARNITINAMIDE | CRQ6QMP3VY | chemical |
| L-CYMAROSE FURANOSE, (R)- | M07NYR38O4 | chemical |
| L-CYMAROSE FURANOSE, (S)- | 6BW41NR6PR | chemical |
| L-CYSTEINE, N-ACETYL-S-(((2R)-7-AMINO-2,3,5,8-TETRAHYDRO-6-METHYL-2-(METHYLAMINO)-5,8-DIOXO-1H-PYRROLO(1,2-A)INDOL-9-YL)METHYL)- | H6O58DRA46 | chemical |
| L-CYSTEINE, N-ACETYL-S-(1,2,3,4,4-PENTACHLORO-1,3-BUTADIENYL)-, (E)- | CC5RL57PPV | chemical |
| L-CYSTEINE, N-ACETYL-S-(3-((4-((3-CHLORO-4-((3-FLUOROPHENYL)METHOXY)PHENYL)AMINO)-6-QUINAZOLINYL)AMINO)-3-OXOPROPYL)- | 95X5AX3CUW | chemical |
| L-CYSTEINE, S-(((2R)-7-AMINO-2,3,5,8-TETRAHYDRO-6-METHYL-2-(METHYLAMINO)-5,8-DIOXO-1H-PYRROLO(1,2-A)INDOL-9-YL)METHYL)- | YKI8DA3MSC | chemical |
| L-CYSTEINYL GLYCINE L-CYSTEINE DISULFIDE | 6EWB1CV9U2 | chemical |
| L-Carbobenzoxyalanine | PUL5J6PUL2 | chemical |
| L-Carnitinenitrile | 54K8596M9G | chemical |
| L-Carnitinenitrile chloride | YZ14J88719 | chemical |
| L-Cyclopentylglycine | 4F7Z2PG365 | chemical |
| L-Cyclopentylglycine hydrochloride | JA6DXA3NBK | chemical |
| L-Cysteic acid phenylthiohydantoin | YQG4XB6WXF | chemical |
| L-Cysteinyl-L-?-aspartyl-L-glutaminyl-L-prolyl-L-valyl-L-leucyl-L-prolyl-L-aspartic acid | 56WH8TKK5Y | protein |
| L-DEPRENYL-D2 C-11 | F2796O8AEN | chemical |
| L-DOS47 | 95E1ZQM329 | protein |
| L-Deoxyaltronojirimycin | MC3UKB9VNH | chemical |
| L-Dinervonoyl lecithin | 4TUH2E54WT | chemical |
| L-ERYTHROFURANOSE, (R)- | NG82VDF8GO | chemical |
| L-ERYTHROFURANOSE, (S)- | ZB9LJH93N3 | chemical |
| L-ERYTHRULOSE | WKK1W5B83O | chemical |
| L-FAC F-18 | 148FUC6JBY | chemical |
| L-FMAC | C04D5CR0GH | chemical |
| L-FMAC F-18 | 1550OGY7TD | chemical |
| L-FUCITOL | 961570X3WO | chemical |
| L-GLUCONO-.GAMMA.-LACTONE | B127M65W5J | chemical |
| L-GLUTAMIC ACID .GAMMA.-HYDRAZIDE | FAJ12751NB | chemical |
| L-GLUTAMIC ACID, ION(1-) | J0V4V954NI | chemical |
| L-GLUTAMINE, N-(2-MERCAPTOETHYL)- | U0SO4TV65D | chemical |
| L-GLUTAMINE, N2-((1-AMINOCYCLOBUTYL)CARBONYL)- | 0GBK253S4H | chemical |
| L-GLUTAMINYL N-(2-AMINOETHYL)-L-ASPARAGINE | L2JA663476 | chemical |
| L-GLUTAMINYL N-(2-AMINOETHYL)-L-GLUTAMINE | Z8W6DN91P8 | chemical |
| L-GULONO-.GAMMA.-LACTONE | 56830VTX9G | chemical |
| L-Glucono-1,5-lactone | J3M8TU9H3W | chemical |
| L-Glutamic acid 5-methyl ester | AYB9ZU5BYZ | chemical |
| L-Glutamic acid compd. with 4-methoxybenzeneethanamine | 6V24PEA9A3 | chemical |
| L-Glutamic acid hydrate | E2KXC35K23 | chemical |
| L-Glutaminyl-L-glutamic acid | EK6VPV7VWH | chemical |
| L-HAMAMELOSE | 14FB1MOQ0W | chemical |
| L-HOMOCYSTEIC ACID | YW13F86W9W | chemical |
| L-Histidine mono(3-methyl-2-oxobutyrate) | KYQ7939A4E | chemical |
| L-ISOLEUCYL-L-GLUTAMYL-L-TRYPTOPHAN | 0E7F7I1471 | chemical |
| L-ISOLEUCYL-L-GLUTAMYL-L-TRYPTOPHAN SODIUM | PWF3PP350P | chemical |
| L-ISOLEUCYL-L-TRYPTOPHAN | AY4YUP87RZ | chemical |
| L-Isoleucyl-L-arginine | EP5VEU7HYX | chemical |