Clearsynth is a leading innovator in pharmaceutical reference standards, offering high-quality Reference Standards for L-tryptophan, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Our L-tryptophan impurity reference standards are invaluable for pharmaceutical research, supporting product development, ANDA and DMF submissions, quality control (QC), method validation, and stability studies. They also aid in identifying unknown impurities and assessing genotoxic potential.
Our L-tryptophan-related products undergo thorough characterization and are supplied with detailed Certificates of Analysis (COA) and analytical data that meet regulatory requirements. All supplied products are re-tested at regular intervals to ensure ongoing quality and compliance.
Our L-tryptophan-related products undergo thorough characterization and are supplied with detailed Certificates of Analysis (COA) and analytical data that meet regulatory requirements. All supplied products are re-tested at regular intervals to ensure ongoing quality and compliance.
L-tryptophan Related Compounds
Stable Isotopes
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| "L-Tryptophan (Ring-13C6,99%)" | Stable Isotopes | CS-O-15763 | 73-22-3 (Unlabeled) | Enquire |
| 5-Hydroxy-L-tryptophan-4,6,7-d3 | Stable Isotopes | CS-T-102935 | 1276197-29-5 | Enquire |
| D,L-Tryptophan-13C2,15N | Stable Isotopes | CS-T-87558 | 1357002-80-2 | Enquire |
| D,L-Tryptophan-d3 | Stable Isotopes | CS-T-87720 | 340257-61-6 | Enquire |
| DL-Tryptophan D8 | Stable Isotopes | CS-O-15401 | 1233395-85-1 | Enquire |
| DL-Tryptophan-d5 (major) | Stable Isotopes | CS-T-96856 | 54-12-6 | Enquire |
| L-Tryptophan-(Indole Ring-2-13C) | Stable Isotopes | CS-CH-00174 | 115709-68-7 | Enquire |
| L-Tryptophan-13C | Stable Isotopes | CS-CH-00170 | 81201-92-5 | Enquire |
| L-Tryptophan-13C11, 15N2 | Stable Isotopes | CS-CH-00171 | 202406-50-6 | Enquire |
| L-Tryptophan-15N2 | Stable Isotopes | CS-ZG-29051 | 204634-20-8 | In Stock |
| L-Tryptophan-Amino-15N | Stable Isotopes | CS-CH-00173 | 99404-62-3 | Enquire |
| L-Tryptophan-d3 | Stable Isotopes | CS-T-87649 | 133519-78-5 | Enquire |
| N-[(9H-Fluoren-9-ylmethoxy)carbonyl]-1-methyl-L-tryptophan-d... | Stable Isotopes | CS-T-96959 | Not Available | Enquire |
API Standards
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Fmoc-7-bromo-DL-tryptophan | API Standards | CS-M-29922 | 1219370-30-5 | Enquire |
Impurities
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| α-Methyl-D,L-tryptophan Methyl Ester | Impurities | CS-T-58731 | 114524-80-0 | Enquire |
| 1-Nitroso-L-tryptophan | Impurities | CS-O-44124 | 68807-89-6 | In Stock |
| 2-(a-D-Mannopyranosyl)-L-tryptophan | Impurities | CS-T-57417 | 180509-18-6 | Enquire |
| 4-Bromo-L-tryptophan | Impurities | CS-O-57883 | 52448-16-5 | Enquire |
| 4-Chloro-L-tryptophan | Impurities | CS-O-57884 | 52448-14-3 | Enquire |
| 4-Methoxy-L-tryptophan | Impurities | CS-O-57882 | 406938-53-2 | Enquire |
| 6-Chloro L-Tryptophan | Impurities | CS-T-51078 | 33468-35-8 | Enquire |
| 7-Benzyloxy-D,L-tryptophan | Impurities | CS-T-06221 | 66866-40-8 | Enquire |
| 7-Methoxy-L-Tryptophan | Impurities | CS-T-79794 | 25198-03-2 | Enquire |
| N-Acetyl-L-Tryptophan | Impurities | CS-T-46885 | 1218-34-4 | In Stock |
| Na-Fmoc-L-tryptophan N-hydroxysuccinimide ester | Impurities | CS-N-00485 | 84771-20-0 | Enquire |
| Na-Methoxycarbonyl L-Tryptophan Methyl Ester | Impurities | CS-T-32301 | 58635-46-4 | Enquire |
| N-Fmoc-5-fluoro-L-tryptophan | Impurities | CS-T-24555 | 908846-88-8 | Enquire |
Intermediates
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| "(+)-cis,trans-Abscisic Acid-L-tryptophan" | Intermediates | CS-T-64188 | 1285591-94-7 | Enquire |
| "5-Fluoro D,L-Tryptophan Hydrochloride" | Intermediates | CS-T-74779 | 1018815-80-9 | Enquire |
| "6-Chloro-D,L-tryptophan" | Intermediates | CS-T-12745 | 17808-21-8 | Enquire |
| "D,L-Tryptophan Methyl Ester Benzaldimine" | Intermediates | CS-T-62594 | 19779-75-0 | Enquire |
| "D,L-Tryptophan Methyl Ester Hydrochloride" | Intermediates | CS-T-62595 | 5619-09-0 | Enquire |
| "D,L-Tryptophanamide Hydrochloride" | Intermediates | CS-T-62596 | 67607-61-8 | Enquire |
| "N-(2,2,2-Trifluoroacetyl)-L-tryptophan Methyl Ester" | Intermediates | CS-T-87628 | 1604-49-5 | Enquire |
| 4-Dimethylallyl-L-tryptophan | Intermediates | CS-T-90551 | 29702-35-0 | Enquire |
| 4-Fluoro-DL-tryptophan | Intermediates | CS-BX-00221 | 25631-05-4 | Enquire |
| 4-Methyl-dl-tryptophan | Intermediates | CS-AC-08255 | 1954-45-6 | Enquire |
| 5-Amino-DL-tryptophan | Intermediates | CS-CE-00653 | 6383-69-3 | Enquire |
| 5-Bromo-DL-tryptophan | Intermediates | CS-CE-00746 | 6548-09-0 | Enquire |
| 5-Chloro-DL-tryptophan | Intermediates | CS-CE-00756 | 154-07-4 | Enquire |
| 5-Fluoro D,L-Tryptophan | Intermediates | CS-T-24283 | 154-08-5 | Enquire |
| 5-Hydroxy L-Tryptophan Methyl Ester | Intermediates | CS-T-56526 | 60971-91-7 | Enquire |
| 5-Methoxy-L-tryptophan | Intermediates | CS-CE-00775 | 25197-96-0 | Enquire |
| 5-Methyl-DL-tryptophan | Intermediates | CS-CE-00778 | 951-55-3 | Enquire |
| 5-Nitro-DL-tryptophan | Intermediates | CS-CE-00786 | 6525-46-8 | Enquire |
| 6-Bromo-DL-tryptophan | Intermediates | CS-CE-00753 | 33599-61-0 | Enquire |
| 6-Fluoro-DL-tryptophan | Intermediates | CS-EL-30145 | 7730-20-3 | Enquire |
| 6-Methyl-DL-tryptophan | Intermediates | CS-CE-00779 | 2280-85-5 | Enquire |
| 7-Methyl-dl-tryptophan | Intermediates | CS-AC-09382 | 17332-70-6 | Enquire |
| Boc-1-methyl-DL-tryptophan | Intermediates | CS-ED-13999 | 185527-65-5 | Enquire |
| Boc-5-methoxy-DL-tryptophan | Intermediates | CS-ED-14000 | 2103356-55-2 | Enquire |
| Boc-6-Bromo-L-tryptophan | Intermediates | CS-ED-17037 | 97444-12-7 | Enquire |
| Boc-alpha-methyl-DL-tryptophan | Intermediates | CS-ED-14001 | 114779-79-2 | Enquire |
| Boc-l-tryptophanol | Intermediates | CS-AC-03147 | 82689-19-8 | Enquire |
| Boc-Nalpha-methyl-DL-tryptophan | Intermediates | CS-ED-14008 | 1452574-00-3 | Enquire |
| Carbobenzoxy-D,L-tryptophanamide | Intermediates | CS-T-10238 | 27018-75-3 | Enquire |
| DL-Tryptophan ethyl ester hydrochloride | Intermediates | CS-DK-00001 | 6519-67-1 | Enquire |
| ethyl 5-(benzyloxy)-N-(tert-butoxycarbonyl)-L-tryptophanate | Intermediates | CS-EL-10011 | 913718-99-7 | Enquire |
| Fmoc-6-chloro L-Tryptophan | Intermediates | CS-T-24568 | 908847-42-7 | Enquire |
| Indole-3-acetyl-L-tryptophan | Intermediates | CS-O-49578 | 57105-53-0 | Enquire |
| L-Tryptophan 7-amido-4-methylcoumarin hydrochloride | Intermediates | CS-CE-00801 | 201860-49-3 | Enquire |
| L-Tryptophan ethyl ester hydrochloride | Intermediates | CS-DK-00021 | 2899-28-7 | Enquire |
| L-Tryptophan tert-Butyl Ester Hydrochloride | Intermediates | CS-T-46028 | 115692-31-4 | Enquire |
| L-Tryptophanamide Hydrochloride | Intermediates | CS-T-62597 | 5022-65-1 | In Stock |
| N-(Ethoxycarbonyl)-α-methyl-L-tryptophan Methyl Ester | Intermediates | CS-T-92251 | 1798895-24-5 | Enquire |
| Na-Benzoyl-L-tryptophan | Intermediates | CS-N-00472 | 4302-66-3 | Enquire |
| Na-Boc-L-tryptophan benzyl ester | Intermediates | CS-N-00476 | 57229-67-1 | Enquire |
| N-Acetyl-5-methyl-dl-tryptophan | Intermediates | CS-T-64107 | 71953-90-7 | Enquire |
| N-Acetyl-DL-Tryptophan | Intermediates | CS-AC-04787 | 87-32-1 | In Stock |
| N-Acetyl-L-tryptophan ethyl ester | Intermediates | CS-ED-37942 | 2382-80-1 | Enquire |
| Na-Fmoc-L-tryptophan | Intermediates | CS-T-24596 | 35737-15-6 | Enquire |
| Nalpha-Boc-Nin-mesitylene-2-sulfonyl-L-tryptophan dicyclohex... | Intermediates | CS-ED-21503 | 92916-48-8 | Enquire |
| Namino-Methyl-4-dimethylallyl-L-tryptophan | Intermediates | CS-T-81360 | 75917-16-7 | Enquire |
| N-Carbobenzoxy-L-tryptophanamide | Intermediates | CS-T-69880 | 20696-64-4 | Enquire |
| N-Fmoc-6-fluoro-L-tryptophan | Intermediates | CS-T-24554 | 908847-01-8 | Enquire |
| α-Methyl-DL-tryptophan | Intermediates | CS-T-80079 | 153-91-3 | Enquire |
Fine Chemicals
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| L-tryptophan | Fine Chemicals | CS-T-46075 | 73-22-3 | In Stock |
| L-Tryptophan Methyl Ester | Fine Chemicals | CS-T-93922 | 4299-70-1 | Enquire |
Building Blocks
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| α-Methyl-L-tryptophan | Building Blocks | CS-T-58729 | 16709-25-4 | Enquire |
| 1-Boc-L-tryptophan | Building Blocks | CS-O-48357 | 146645-63-8 | Enquire |
| 2-Hydroxy L-Tryptophan Hydrochloride | Building Blocks | CS-TB-71439 | 881025-90-7 | Enquire |
| 5-(2-Fluoroethoxy)-L-tryptophan | Building Blocks | CS-T-54773 | 1215091-03-4 | Enquire |
| 5-Hydroxy-L-tryptophan | Building Blocks | CS-M-57211 | 4350-09-8 | Enquire |
| 7-CHLORO-L-TRYPTOPHAN | Building Blocks | CS-DV-03362 | 73945-46-7 | Enquire |
| Boc-4-methyl-DL-tryptophan | Building Blocks | CS-M-29885 | 1219232-56-0 | Enquire |
| Boc-5-benzyloxy-DL-tryptophan | Building Blocks | CS-M-29886 | 1219197-92-8 | Enquire |
| Boc-5-bromo-DL-tryptophan | Building Blocks | CS-M-29887 | 67308-26-3 | Enquire |
| Boc-5-chloro-DL-tryptophan | Building Blocks | CS-M-29888 | 361576-61-6 | Enquire |
| Boc-5-fluoro-DL-tryptophan | Building Blocks | CS-M-29889 | 67337-05-7 | Enquire |
| Boc-5-hydroxy-DL-tryptophan | Building Blocks | CS-M-29890 | 185525-63-7 | Enquire |
| Boc-5-hydroxy-L-tryptophan | Building Blocks | CS-M-29891 | 119768-45-5 | Enquire |
| Boc-5-methoxy-2-methyl-DL-tryptophan | Building Blocks | CS-M-29892 | 1219410-28-2 | Enquire |
| Boc-5-methoxy-L-tryptophan | Building Blocks | CS-M-29894 | 114903-30-9 | Enquire |
| Boc-5-methyl-DL-tryptophan | Building Blocks | CS-M-29895 | 142847-21-0 | Enquire |
| Boc-6-bromo-DL-tryptophan | Building Blocks | CS-M-29896 | 1104606-57-6 | Enquire |
| Boc-6-fluoro-DL-tryptophan | Building Blocks | CS-M-29899 | 67308-25-2 | Enquire |
| Boc-6-methyl-DL-tryptophan | Building Blocks | CS-M-29900 | 446847-83-2 | Enquire |
| Boc-7-benzyloxy-DL-tryptophan | Building Blocks | CS-M-29901 | 1219375-22-0 | Enquire |
| Boc-7-bromo-DL-tryptophan | Building Blocks | CS-M-29902 | 1219432-58-2 | Enquire |
| Boc-7-methyl-DL-tryptophan | Building Blocks | CS-M-29903 | 1219333-83-1 | Enquire |
| Fmoc-4-methyl-DL-tryptophan | Building Blocks | CS-M-29905 | 1219279-39-6 | Enquire |
| Fmoc-5-benzyloxy-DL-tryptophan | Building Blocks | CS-M-29906 | 1219348-47-6 | Enquire |
| Fmoc-5-bromo-DL-tryptophan | Building Blocks | CS-M-29907 | 925939-82-8 | Enquire |
| Fmoc-5-chloro-DL-tryptophan | Building Blocks | CS-M-29908 | 1219398-51-2 | Enquire |
| Fmoc-5-fluoro-DL-tryptophan | Building Blocks | CS-MM-87176 | 138775-55-0 | Enquire |
| Fmoc-5-hydroxy-L-tryptophan | Building Blocks | CS-M-29911 | 351857-99-3 | Enquire |
| Fmoc-5-methoxy-2-methyl-DL-tryptophan | Building Blocks | CS-M-29912 | 1219357-78-4 | Enquire |
| Fmoc-5-methoxy-L-tryptophan | Building Blocks | CS-M-29914 | 1219184-52-7 | Enquire |
| Fmoc-5-methyl-DL-tryptophan | Building Blocks | CS-M-29915 | 138775-52-7 | Enquire |
| Fmoc-6-bromo-DL-tryptophan | Building Blocks | CS-M-29916 | 753504-16-4 | Enquire |
| Fmoc-6-methyl-DL-tryptophan | Building Blocks | CS-M-29920 | 1219150-44-3 | Enquire |
| Fmoc-7-benzyloxy-DL-tryptophan | Building Blocks | CS-M-29921 | 1219174-46-5 | Enquire |
| Fmoc-7-methyl-DL-tryptophan | Building Blocks | CS-M-29923 | 138775-53-8 | Enquire |
| N-[(9H-Fluoren-9-ylmethoxy)carbonyl]-1-methyl-L-tryptophan | Building Blocks | CS-T-75322 | 1334509-86-2 | Enquire |
| Na-Boc-L-tryptophan 4-nitrophenyl ester | Building Blocks | CS-N-00475 | 15160-31-3 | Enquire |
| Na-Fmoc-Na-methyl-L-tryptophan | Building Blocks | CS-N-00486 | 112913-63-0 | Enquire |
| N-Boc-N-Boc-L-tryptophan | Building Blocks | CS-DV-03651 | 144599-95-1 | Enquire |
| N-Carbobenzyloxy-DL-tryptophan | Building Blocks | CS-O-51646 | 13058-16-7 | Enquire |