Molekula
Scientific Supply
Molekula L-Tryptophan
L-Tryptophan is an essential amino acid used in nutritional supplements, pharmaceuticals, and research.CAS number: 73-22-3Select the required pack size. Contact Bench & Flask for bulk quantities and availability.Supplier packaging image is illustrative; packaging may vary by pack size.Specifications Property Value Appearance White Powder Specific rotation -29.4 to -32.8...
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Product information
Specification & product details.
L-Tryptophan is an essential amino acid used in nutritional supplements, pharmaceuticals, and research.
CAS number: 73-22-3
Select the required pack size. Contact Bench & Flask for bulk quantities and availability.
Supplier packaging image is illustrative; packaging may vary by pack size.
Specifications
| Property | Value |
| Appearance | White Powder |
| Specific rotation | -29.4 to -32.8 |
| Identification | Conforms to reference |
| pH | 5.5 to 7.0 |
| Loss on Drying | ≤ 0.3% |
| Specification | Conforms to USP specification |
| Chloride (Cl-) | ≤ 0.05% |
| Assay | ≥ 98.5% |
| Residue on Ignition | ≤ 0.1% |
| Iron (Fe) | ≤ 0.003% |
| Lead (Pb) | ≤ 0.0015% |
Storage & handling
| Property | Value |
| Storage Temperature | Ambient |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
| Odour | Odorless |
| Melting Point | 282 °C (decomposes) |
| Solubility (other solvents) | Slightly soluble in acetic acid, ethanol; insoluble in ethyl ether |
| pKa | pKa = 7.38 (at 25 °C) |
| log P (octanol/water) | -1.06 |
Identification
| Property | Value |
| SKU | 13831082 |
| CAS Number | 73-22-3 |
| IUPAC Name | (2S)-2-amino-3-(1H-indol-3-yl)propanoic acid |
| EC Number | 200-795-6 |
| Molecular Formula | C11H12N2O2 |
| Molecular Weight | 204.23 |
| Exact Mass | 204.0899 |
| SMILES | C1=CC=C2C(=C1)C(=CN2)C\[C@@H\](C(=O)O)N |
| InChIKey | QIVBCDIJIAJPQS-VIFPVBQESA-N |
| InChI | InChI=1S/C11H12N2O2/c12-9(11(14)15)5-7-6-13-10-4-2-1-3-8(7)10/h1-4,6,9,13H,5,12H2,(H,14,15)/t9-/m0/s1 |
| PubChem CID | 6305 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 29339975 |
| Tariff Code | 2933998090 |
Safety & GHS
Precautionary statements
- P264Wash thoroughly after handling
- P280Wear protective gloves/protective clothing/eye protection/face protection
- P308+313IF exposed or concerned: Get medical advice/attention
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Alternative names
(2S)-2-amino-3-(1H-indol-3-yl)propanoic acid; (S)-Tryptophan; Ardeytropin; Indole-3-alanine; L-Tryptophane; Pacitron; trofan; tryptacin; tryptophan; Tryptophane
Product documentation
Product specification PDF. Batch-specific certificates of analysis and safety data sheets are available on request.
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