5,6-DIHYDROXYINDOLINE HBr Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 138937-28-7 |
| Product name | 5,6-DIHYDROXYINDOLINE HBr |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical 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) |
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Documents We Provide for 5,6-DIHYDROXYINDOLINE HBr
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 5,6-DIHYDROXYINDOLINE HBr Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 5,6-DIHYDROXYINDOLINE HBr
| Industry | Application | Process |
|---|---|---|
| Pharmaceutical R&D | Intermediate synthesis | Used to synthesize biologically active indole compounds as key intermediates in drug molecule construction |
| Organic synthesis | Organic synthesis reagent | Participates in cyclization, coupling, and other reactions to prepare complex indole derivatives |
| Biochemistry | Pigment research | Used to model intermediates in the melanin biosynthetic pathway for studying pigment formation mechanisms |
Manufacturing Quality Control of 5,6-DIHYDROXYINDOLINE HBr
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantitative determination using reverse-phase HPLC with UV detection at 280 nm, comparing peak area against a certified reference standard. |
| Related Substances | HPLC-UV | Separation and quantification of impurities using gradient HPLC-UV; identification based on retention time matching and threshold limits per ICH Q3B. |
| Residual Solvents | GC-FID | Headspace GC with flame ionization detection to quantify residual solvents (e.g., methanol, ethyl acetate) against calibrated standards. |
| Water Content | Karl Fischer Titration | Volumetric or coulometric titration using iodine-based reagent to determine trace water content via stoichiometric reaction. |
| Heavy Metals | ICP-MS | Multi-element detection and quantification of toxic metals (Pb, Cd, Hg, As) after acid digestion, using isotopic mass spectrometry for sub-ppq sensitivity. |
| Chloride Impurity | Ion Chromatography | Separation and quantification of chloride ions using suppressed conductivity detection with anion-exchange column. |
| Sulfate Impurity | Ion Chromatography | Quantification of sulfate ions via anion-exchange chromatography with conductivity detection. |
| pH (1% w/v aqueous solution) | Potentiometric pH Measurement | Direct measurement using calibrated glass electrode in aqueous suspension after equilibration. |
| Residue on Ignition | Gravimetric Analysis | Determination of inorganic ash content by high-temperature incineration (500-600 C) followed by weighing of residual residue. |
| Particle Size Distribution | Laser Diffraction | Analysis of dry powder dispersion using laser scattering to determine D10, D50, D90 values per USP <429>. |
| Microbial Limits | Membrane Filtration | Enumeration of aerobic mesophilic microorganisms and absence testing for specified pathogens per Ph. Eur. 2.6.12. |
| Optical Rotation | Polarimetry | Measurement of specific rotation using sodium D-line light to confirm chiral integrity and detect racemization. |
Technical Specifications of 5,6-DIHYDROXYINDOLINE HBr
| Test Item | Specification |
|---|---|
| Appearance | Pale grey solid |
| Purity | >=98.0% (HPLC) |
| Water Content (KF) | <=0.5% |
| Melting Point | 182–186 °C |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=20 ppm |
| Residue on Ignition | <=0.1% |
Specifications vary by industry. Reach out to our technical experts for a COA tailored specifically to your application. Email:selse@GRchemical.com
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Download COA of 5,6-DIHYDROXYINDOLINE HBr
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 5,6-DIHYDROXYINDOLINE HBr
Packaging of 5,6-DIHYDROXYINDOLINE HBr
Industrial 5,6-DIHYDROXYINDOLINE HBr Procurement FAQ
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.
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