China Factory Direct
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| CAS number | 526-55-6 |
| Product name | Tryptophol |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradePharmaceutical GradeIndustrial GradeSpecialty Grade |
| Packaging | 25KG/bag |
| Sample | Test Samples Available (Click to Request Samples) |
| COA | View COA |
| Price | Get Quote |
| Supply Type | Bulk / Contract manufacturing / OEM |
| Shipping | FCL / LCL available |
| Payment Terms | Support FOB \ CIF \ EXW quotations, and accept Letter of Credit (L/C). |
| Manufacturer | Greenrock Chemical(China Factory) |
Based on current marketvolatility and material availability.
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
| Industry | Application | Process |
|---|---|---|
| Pharmaceuticals | Synthesis of serotonin derivatives or precursors | Organic synthesis, catalytic reactions |
| Biochemistry | Reagent for neurotransmitter research | Laboratory-scale synthesis and purification |
| Dyes | Synthesis of tryptamine-based dye intermediates | Diazotization and coupling reactions |
| Agrochemicals | Research on plant growth regulators | Biological activity testing and formulation development |
| Test Item | Common Testing Method | Method Overview |
|---|---|---|
| Assay | High-Performance Liquid Chromatography (HPLC) | Uses a reversed-phase C18 column and UV detector (220–280 nm), with buffer salt-organic mobile phase, and external standard method for quantitative determination of 5-HTP. Offers high sensitivity and good reproducibility. |
| Purity Analysis | High-Performance Liquid Chromatography (HPLC) | Same as above; assesses sample purity based on the percentage of main peak area, and can simultaneously detect related impurities (e.g., tryptophan, degradation products). |
| Impurity Testing | HPLC-UV or LC-MS | Uses HPLC to separate potential impurities such as synthesis intermediates and degradation products (e.g., beta-carbolines); LC-MS provides further structural confirmation of impurities. |
| Moisture Content | Karl Fischer Titration | Determines water content precisely based on the redox reaction of iodine with sulfur dioxide in an anhydrous environment. Suitable for moisture analysis in solid active pharmaceutical ingredients (APIs). |
| Heavy Metals | Atomic Absorption Spectroscopy (AAS) or ICP-MS | Detects residual toxic elements such as lead, cadmium, mercury, and arsenic. ICP-MS offers higher sensitivity and enables simultaneous multi-element detection, meeting pharmacopeial requirements for heavy metal limits. |
| Residual Solvents | Gas Chromatography (GC) | Determines residual levels of organic solvents (e.g., methanol, ethanol, acetone) used during manufacturing, in accordance with ICH guidelines. Uses FID detector or headspace sampling techniques. |
| Crystal Form Analysis | X-Ray Powder Diffraction (XRD) | Analyzes the crystalline structure of 5-HTP to identify polymorphism and ensure consistency of physical properties between batches. |
| Melting Point | Melting Point Apparatus | Determines the melting temperature range by heating the sample; used for preliminary identification and purity assessment. |
| Specific Optical Rotation | Polarimetry | Measures optical activity to verify chiral purity (5-HTP is L-configuration), confirming compliance with its natural stereochemical characteristics. |
| Microbial Limits | Microbiological Culture Methods | Tests total aerobic microbial count, molds and yeasts, and specified pathogens (e.g., *Escherichia coli*, *Salmonella*) according to pharmacopeial standards to ensure microbiological safety. |
| Test Item | Specification |
|---|---|
| Appearance | Light brown powder |
| Purity | ≥98.0% |
| Water | ≤1.0% |
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| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
1. How do you ensure product quality consistency?
We rely on a mature China-based manufacturing system and implement strict batch control and quality inspection for every shipment. Our production process complies with ISO 9001 standards, and a COA is provided for each batch to ensure consistent and reliable quality.
2. Do you offer competitive pricing for bulk orders?
Yes, as a China-based manufacturer and bulk supplier, we provide tiered pricing based on order volume. We support FOB and CIF quotations, as well as L/C payment terms for large transactions to meet international trade requirements.
3. Can you support large-volume or long-term supply?
We have stable production capacity and a well-established supply chain, enabling continuous bulk supply. We support ton-level and container-level orders, as well as long-term cooperation projects.
4. What is your typical lead time?
For in-stock products, shipment can be arranged within 1–3 days. For bulk packaging or customized orders, lead time depends on the specific quantity and production schedule.
5. What documents do you provide?
We can provide complete documentation upon request, including COA, SDS, TDS, and other compliance certificates, meeting industrial procurement and export requirements.
6. Can you customize product specifications or packaging?
Yes, we support customization of parameters such as purity, impurities, residual solvents, and heavy metals. We also offer various bulk packaging options, including 25kg bags, drums, and IBC tanks, suitable for industrial applications and transportation.
7. What shipping options do you support?
We support both FCL (Full Container Load) and LCL (Less than Container Load) shipments, and can flexibly arrange logistics solutions based on order size to meet bulk chemical export needs.
8. Do you provide technical or application support?
Yes, we provide basic application guidance and technical support based on industry experience to help customers optimize product usage.
9. How do you handle compliance and export regulations?
We are familiar with international trade and export regulations, ensuring all products comply with relevant requirements. We also provide complete documentation to support smooth customs clearance and global delivery.