China Factory Direct
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| CAS number | 41340-36-7 |
| Product name | 7-Ethyl tryptophol |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Reagent GradeIndustrial GradeSpecialty Grade |
| Packaging | 25KG/bag500KG/bag1000KG/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 |
|---|---|---|
| Pharmaceutical R&D | Organic synthesis intermediate | Used in the synthesis of biologically active indole compounds to construct drug molecule scaffolds |
| Fine chemicals | Dye and functional material intermediate | Serves as a precursor to functionalized indole derivatives for preparing materials with optical or electronic properties |
| Chemical research | Research reagent | Applied in laboratories for developing novel organic reactions and studying structural modifications |
| Test Item | Common Testing Method | Method Overview |
|---|---|---|
| Appearance and Properties | Visual Inspection + Melting Point Determination | Observe solid color and crystal form; use capillary method to determine melting point range to assess purity and crystallinity. |
| Content Determination | High-Performance Liquid Chromatography (HPLC) | Use C18 chromatographic column with water-acetonitrile gradient elution as mobile phase. Detect using UV detector (254–280 nm) and quantify by external standard method, suitable for main component purity analysis. |
| Impurity Profile Analysis | HPLC-UV / HPLC-MS | Separate degradation products and synthetic impurities using gradient elution; identify structures via mass spectrometry (ESI+), controlling single impurity and total impurities. |
| Solvent Residue | Gas Chromatography (GC) | Use headspace injection with DB-624 chromatographic column and FID detection to measure residual solvents such as ethanol, acetonitrile, and DMF according to ICH Q3C standards. |
| Water Content | Karl Fischer Titration | Determine trace water content in the sample using coulometric or volumetric methods; control water content ≤ 0.5% (adjustable based on usage). |
| Melting Point | Melting Point Apparatus Measurement | Precisely measure melting point range as an initial indicator of purity, comparing with literature values or standard samples. |
| UV Absorption Spectrum | UV-Visible Spectrophotometry (UV-Vis) | Prepare solution in methanol or acetonitrile and scan wavelengths from 200–400 nm to determine maximum absorption wavelength (λmax), used for qualitative analysis and concentration estimation. |
| Nitrogen Content (Optional) | Kjeldahl Method / Elemental Analysis (CHN) | Used to verify whether nitrogen atom content matches theoretical value (indole ring contains one N), assisting in structural confirmation. |
| Optical Rotation (if chiral center is present) | Polarimeter Measurement | If hydroxyethyl group introduces a chiral center, specific optical rotation should be measured to control enantiomer purity (this structure has no chiral center, so not required). |
| Test Item | Specification |
|---|---|
| Appearance | White to light yellow crystalline powder |
| Purity | >=98.0% (GC-MS) |
| Melting Point | 128–132°C |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Water Content (KF) | <=0.5% |
| Identification (NMR) | Conforms to reference standard |
| Residue on Ignition | <=0.1% |
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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.