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Qingdao Fraken International Trading Co., Ltd.
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N-Acetyl-DL-Tryptophan
| CAS NO | 87-32-1 |
| Standard | AJI |
| Appearabce | white or off-white crystalline powder |
| Purity | 99.8% min |
| Brand name | Fraken |
| N-Acetyl-DL-Tryptophan | |
| Item | Specification |
| Appearance | White crystals or crystalline powder |
| State of solution | Clear and colorless 95.0% Min |
| Chloride (Cl) | 0.04% Max |
| Ammonium (NH4) | 0.02% Max |
| Iron (Fe) | 30ppm Max |
| Heavy metals | 10ppm Max |
| Arsenic | 2ppm Max |
| Other amino acids | Not spot |
| Loss on drying | 0.60% Max |
| Residue on ignition | 0.20% Max |
| pH | 2.5 to 3.5 |
| Assay | 99.8.0%~101.0% |