Basic information
- Product Name：L-Tryptophan
- CAS NO.：73-22-3
- MF：C11H12N2O2
- MW：204.23
- Boiling Point：342.72°C (rough estimate)
- Melting Point：289-290 °C (dec.)(lit.)
- Store Condition：2-8°C
- Solubility：20% NH3: 0.1 g/mLat 20 °C, clear, colourless
Specification of L-Tryptophan
| Test items | Standards |
| Appearance | white crystals or crystalline Powder |
| Description | White crystallime powder OrCrystalline Powder |
| Specific rotation[α]D20° | -29.4°~-32.8° |
| Loss on dtying | ≤0.30% |
| Residue on ignition | ≤0.10% |
| Chloride(Cl) | ≤0.05% |
| Sulfate(S04) | ≤0.03% |
| lron(Fe) | ≤0.003% |
| Heavy metals(Pb) | NMT 15PPM |
| Assay | 98.5~101.5% |
| Organic volatile impurities | Meet the requirement |
| PH | 5.5~7.0 |
Our Advantages
Stable quality
We deliver high-quality products supported by strict QC/QA. Our teams inspect materials, production, and finished goods, while optimizing processes for consistent quality.
Supply ability
We maintain safety stock for all high-demand products, enabling immediate shipment arrangement upon order confirmation.
Delivery speed
Fast delivery guaranteed: in-stock items ship immediately; custom orders include production lead times.
Quality Assurance
Each step of production and finished products will be inspected by QC to ensure the quality.
Our QC lab is equipment with comprehensive testing instruments like HPLC,GC,LCMS,etc.
Team members of QA and QC are taking regular training to remain qualified.
Strong R&D ability
We have two R&D centers in Hangzhou.
One focuses on synthetic biology and chemicals, and the other focuses on peptides.
The R&D team is led by post-doctoral researchers with overseas education experience. The team consists of 5 PhDs, 18 master's degree holders, and 25 bachelor's degree holders, who are experts in selecting and designing chemical synthesis routes.
Additionally, our team has extensive experience in pilot-scale and commercial production. Many team members have hands-on experience in both R&D and large-scale manufacturing.
Contact Us
Email: miley@joybiotech.com
Email: hannibal@joybiotech.com
Wechat: mt20230523
Our Certificates
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