Clearsynth is a leading innovator in pharmaceutical reference standards, offering high-quality Reference Standards for Tryptophan, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Our 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 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 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.
Tryptophan Related Compounds
Stable Isotopes
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| 5-Hydroxy-L-tryptophan-4,6,7-d3 | Stable Isotopes | CS-T-102935 | 1276197-29-5 | 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 |
| D-Tryptophan-d5 | Stable Isotopes | CS-T-62613 | 1202359-57-6 | In Stock |
| N-[(9H-Fluoren-9-ylmethoxy)carbonyl]-1-methyl-L-tryptophan-d... | Stable Isotopes | CS-T-96959 | Not Available | Enquire |
| N1-Nitroso Tryptophan-d5 | Stable Isotopes | CS-O-58641 | 68807-89-6(Unlabeled) | Enquire |
| 2-(α-D-Mannopyranosyl)-L-tryptophan-d4 | Stable Isotopes | CS-T-95137 | Not Available | Enquire |
| 5-Hydroxytryptophan-[d3] (Solution) | Stable Isotopes | CS-I-00657 | Not Available | 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 |
| L-Tryptophan (Ring-13C6,99%) | Stable Isotopes | CS-O-15763 | 73-22-3 (Unlabeled) | Enquire |
| L-Tryptophan-d3 | Stable Isotopes | CS-T-87649 | 133519-78-5 | Enquire |
API
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| D-Tryptophan | API | CS-T-46073 | 153-94-6 | In Stock |
| Tryptophan | API | CS-M-26965 | 54-12-6 | In Stock |
| D,L-Azatryptophan Hydrate | API | CS-T-48461 | 7146-37-4 | Enquire |
| D,L-Homotryptophan | API | CS-T-55688 | 26988-87-4 | Enquire |
| Fructose-tryptophan | API | CS-T-55100 | 25020-15-9 | Enquire |
Impurity
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| (R)-3-(1H-indol-3-yl)-2-ureidopropionic acid | Impurity | CS-O-48472 | 54896-75-2 | Enquire |
| 4-Bromo-L-tryptophan | Impurity | CS-O-57883 | 52448-16-5 | Enquire |
| 4-Chloro-L-tryptophan | Impurity | CS-O-57884 | 52448-14-3 | Enquire |
| 4-Methoxy-L-tryptophan | Impurity | CS-O-57882 | 406938-53-2 | Enquire |
| 5-Hydroxyindole-3-acetic Acid | Impurity | CS-T-28695 | 54-16-0 | In Stock |
| N-Acetyl-L-Tryptophan | Impurity | CS-T-46885 | 1218-34-4 | In Stock |
| Tryptophan Cyclized impurity | Impurity | CS-T-94477 | 40856-80-2 | In Stock |
| Tryptophan EP Impurity A | Impurity | CS-T-54496 | 132685-02-0 | In Stock |
| Tryptophan EP Impurity D | Impurity | CS-O-14183 | 56-69-9 | In Stock |
| Tryptophan EP Impurity E | Impurity | CS-O-44595 | 3978-11-8 | Enquire |
| Tryptophan EP Impurity I | Impurity | CS-N-00398 | 5470-37-1 | In Stock |
| α-Methyl-D,L-tryptophan Methyl Ester | Impurity | CS-T-58731 | 114524-80-0 | Enquire |
| 2-(a-D-Mannopyranosyl)-L-tryptophan | Impurity | CS-T-57417 | 180509-18-6 | Enquire |
| 6-Chloro D-Tryptophan | Impurity | CS-T-51077 | 56632-86-1 | Enquire |
| 6-Chloro L-Tryptophan | Impurity | CS-T-51078 | 33468-35-8 | Enquire |
| 7-Benzyloxy-D,L-tryptophan | Impurity | CS-T-06221 | 66866-40-8 | Enquire |
| 7-Methoxy-L-Tryptophan | Impurity | CS-T-79794 | 25198-03-2 | Enquire |
| N-[(Benzyloxy)carbonyl]-L-tryptophan | Impurity | CS-M-47034 | 7432-21-5 | Enquire |
| Na-Boc-D-tryptophan | Impurity | CS-T-07732 | 5241-64-5 | Enquire |
| N-Acetyl 6-Chlorotryptophan | Impurity | CS-T-47122 | 50517-10-7 | Enquire |
| N-Acetyl-6-chloro-D-tryptophan | Impurity | CS-T-47123 | 56777-76-5 | Enquire |
| Na-Fmoc-L-tryptophan N-hydroxysuccinimide ester | Impurity | CS-N-00485 | 84771-20-0 | Enquire |
| Na-Methoxycarbonyl L-Tryptophan Methyl Ester | Impurity | CS-T-32301 | 58635-46-4 | Enquire |
| N-Fmoc-5-fluoro-L-tryptophan | Impurity | CS-T-24555 | 908846-88-8 | Enquire |
| Tryptophan EP Impurity B | Impurity | CS-O-14181 | 13081-15-7 | Enquire |
| Tryptophan EP Impurity C | Impurity | CS-O-14182 | 2922-83-0 | Enquire |
| Tryptophan EP Impurity F | Impurity | CS-O-14184 | 145545-23-9 | Enquire |
| Tryptophan EP Impurity G | Impurity | CS-T-56523 | 21704-80-3 | Enquire |
| Tryptophan EP Impurity H | Impurity | CS-O-14185 | 72002-54-1 | Enquire |
| Tryptophan EP Impurity J | Impurity | CS-O-14186 | Not Available | Enquire |
| Tryptophan EP Impurity K | Impurity | CS-O-14187 | 149724-31-2 | Enquire |
| Tryptophan EP Impurity L | Impurity | CS-O-14188 | Not Available | Enquire |
| Tryptophan impurity 36 | Impurity | CS-O-54410 | ---- | Enquire |
Intermediate
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| 1H-Indole-3-carbaldehyde | Intermediate | CS-M-22050 | 487-89-8 | In Stock |
| D-Tryptophan Methyl Ester Hydrochloride | Intermediate | CS-M-57693 | 14907-27-8 | In Stock |
| L-Tryptophanamide Hydrochloride | Intermediate | CS-T-62597 | 5022-65-1 | In Stock |
| N-Acetyl-DL-Tryptophan | Intermediate | CS-AC-04787 | 87-32-1 | In Stock |
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 |
| Sodium acetyltryptophanate | Fine Chemicals | CS-ZH-05090 | 62307-74-8 | Enquire |
Nitrosamine
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| 1-Nitroso-L-tryptophan | Nitrosamine | CS-O-44124 | 68807-89-6 | In Stock |
| 1-Nitroso-L-tryptophan Methyl ester | Nitrosamine | CS-O-44941 | ---- | In Stock |
| DL-N-Acetyl-1-nitrosyltryptophan | Nitrosamine | CS-O-48188 | 53602-74-7 | In Stock |
| Methyl 1-nitroso-D-tryptophanate | Nitrosamine | CS-O-49174 | Not Available | Enquire |
| N-Nitroso D-Tryptophan | Nitrosamine | CS-EO-04022 | Not Available | Enquire |
| N-Nitroso- Tryptophan EP Impurity H | Nitrosamine | CS-O-52593 | ---- | In Stock |
| N-Nitroso- Tryptophan EP Impurity I | Nitrosamine | CS-O-52589 | 23708-74-9 | In Stock |
Secondary Standards
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| 5-Hydroxy-L-tryptophan | Secondary Standards | CS-SS-25409-100MG | 895096 | Enquire |
| L-Tryptophan ethyl ester hydrochloride | Secondary Standards | CS-SS-25413-100MG | 2899-28-7 | Enquire |
| L-Tryptophan isopropyl ester hydrochloride | Secondary Standards | CS-SS-26366 | 71959-71-2 | Enquire |
| L-Tryptophan methyl ester hydrochloride | Secondary Standards | CS-SS-25414-100MG | 7524-52-9 | Enquire |
| N-Acetyl-DL-tryptophan | Secondary Standards | CS-SS-26521-100MG | 87-32-1 | Enquire |
| N-Acetyl-L-tryptophan | Secondary Standards | CS-SS-24212-500MG | 1218-34-4 | Enquire |
| Tryptophan | Secondary Standards | CS-SS-24211-1GM | 73-22-3 | Enquire |
| Tryptophan Related Compound A | Secondary Standards | CS-SS-25415-30MG | 132685-02-0 | Enquire |
Stable Isotope Reagent
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| 5-Hydroxy L-Tryptophan-d4 | Stable Isotope Reagent | CS-T-56525 | 1246818-91-6 | In Stock |
| 1-Methyl-d3-L-tryptophan | Stable Isotope Reagent | CS-C-01189 | 1801851-87-5 | Enquire |
| 5-Hydroxy-L-tryptophan-4,6,7-d3 H2O | Stable Isotope Reagent | CS-C-01234 | 314062-44-7(unlabelled) | Enquire |
| L-Tryptophan-(Indole Ring-2-13C) | Stable Isotope Reagent | CS-CH-00174 | 115709-68-7 | Enquire |
| L-Tryptophan-13C | Stable Isotope Reagent | CS-CH-00170 | 81201-92-5 | Enquire |
| L-Tryptophan-13C11, 15N2 | Stable Isotope Reagent | CS-CH-00171 | 202406-50-6 | Enquire |
| L-Tryptophan-15N2 | Stable Isotope Reagent | CS-ZG-29051 | 204634-20-8 | In Stock |
| L-Tryptophan-Amino-15N | Stable Isotope Reagent | CS-CH-00173 | 99404-62-3 | Enquire |
Peptide
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Acetyl-tryptophan Lanreotide | Peptide | CS-O-54461 | ---- | Enquire |
| N-(1-Oxo-6-phenylhexyl)glycyl-L-tryptophanamide | Peptide | CS-ED-42054 | 678996-63-9 | Enquire |
Biochemicals
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| N-Acetyl-DL-Tryptophan for cell culture, 99%, Endotoxin (BET... | Biochemicals | CS-SR-00471 | 87-32-1 | Enquire |
Building Blocks
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| 1-Boc-L-tryptophan | Building Blocks | CS-O-48357 | 146645-63-8 | Enquire |
| N-Carbobenzyloxy-DL-tryptophan | Building Blocks | CS-O-51646 | 13058-16-7 | Enquire |
| α-Methyl-L-tryptophan | Building Blocks | CS-T-58729 | 16709-25-4 | 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-chloro-DL-tryptophan | Building Blocks | CS-M-29897 | 1219193-65-3 | Enquire |
| Boc-6-chloro-D-tryptophan | Building Blocks | CS-M-29898 | 1217738-82-3 | 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-DL-tryptophan | Building Blocks | CS-M-29913 | 138775-54-9 | 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-chloro-D-tryptophan | Building Blocks | CS-M-29918 | 925916-73-0 | 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-bromo-DL-tryptophan | Building Blocks | CS-M-29922 | 1219370-30-5 | Enquire |
| Fmoc-7-methyl-DL-tryptophan | Building Blocks | CS-M-29923 | 138775-53-8 | Enquire |
| Fmoc-DL-7-azatryptophan | Building Blocks | CS-M-29924 | 1219143-85-7 | Enquire |
| Fmoc-l-beta-homotryptophan | Building Blocks | CS-T-74681 | 353245-98-4 | Enquire |
| L-N-Boc-5-chlorotryptophan | Building Blocks | CS-DV-03623 | 114873-08-4 | Enquire |
| N-(tert-Butoxycarbonyl)-L-tryptophan | Building Blocks | CS-M-47035 | 13139-14-5 | 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-Boc-L-tryptophan benzyl ester | Building Blocks | CS-N-00476 | 57229-67-1 | 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 |
Deuterated Reagents
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| L-Tryptophan d5 | Deuterated Reagents | CS-O-14189 | 62595-11-3 | In Stock |