China Factory Direct
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| CAS number | 1956-11-2 |
| Product name | 4-NITROPHENYL LAURATE |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeReagent 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 |
|---|---|---|
| Biobiochemistry | Substrate for esterase activity assay | Hydrolysis generates 4-nitrophenol; enzyme activity is quantified by measuring absorbance change via spectrophotometry |
| Analytical Chemistry | Model compound for enzyme kinetics studies | Used to determine hydrolysis rates, Michaelis constant (Km), and maximum reaction velocity (Vmax) for lipases, esterases, and related enzymes |
| Enzyme Engineering | Probe for evaluating immobilized enzyme performance | Colorimetric analysis after reaction with immobilized enzyme assesses carrier impact on retained enzyme activity and operational stability |
| Teaching Laboratories | Demonstration reagent for biochemistry instruction | Used in laboratory settings to visually demonstrate enzymatic hydrolysis and the chromogenic properties of the reaction product |
| Test Item | Common Testing Methods | Method Overview |
|---|---|---|
| Purity | High-Performance Liquid Chromatography (HPLC) | Uses a reversed-phase C18 column with a UV detector (e.g., at 254 or 310 nm) to quantify the main component's purity based on retention time and peak area; can simultaneously detect related impurities. |
| Assay | Ultraviolet-Visible Spectrophotometry (UV-Vis) | Utilizes the maximum absorbance at a specific wavelength (e.g., near 310 nm) to calculate the concentration of the target compound via a standard calibration curve; simple and rapid operation. |
| Structure Confirmation | Fourier Transform Infrared Spectroscopy (FT-IR) | Confirms molecular structure consistency by comparing characteristic functional group absorption peaks (e.g., ester carbonyl ~1735 cm⁻¹, nitro group ~1520 & 1340 cm⁻¹) with reference spectra. |
| Molecular Weight / Structure Verification | Mass Spectrometry (MS, e.g., ESI-MS or GC-MS) | Verifies molecular weight through precise molecular ion peaks ([M+H]⁺ or [M+Na]⁺); fragment ions aid in structural elucidation, suitable for high-sensitivity qualitative analysis. |
| Water Content | Karl Fischer Titration | Determines trace water content in samples using volumetric or coulometric methods to ensure product stability and prevent hydrolysis-related quality degradation. |
| Residual Solvents | Gas Chromatography (GC-FID or GC-MS) | Uses headspace or direct injection to separate and quantify organic solvents potentially residual from manufacturing processes (e.g., methanol, ethyl acetate), in compliance with ICH Q3C guidelines. |
| Melting Point | Capillary Melting Point Determination | Measures the temperature range over which a substance transitions from solid to liquid; used as a physical constant for preliminary assessment of purity and identity. |
| Appearance and Color | Visual Inspection / Color Comparison | Observes whether the substance is a white to pale yellow crystalline powder; color may be evaluated against standard color solutions if necessary. |
| Heavy Metal Residues | Atomic Absorption Spectroscopy (AAS) or ICP-MS | Detects levels of harmful metallic elements such as lead, arsenic, cadmium, and mercury to ensure compliance with pharmacopeial or chemical safety standards (e.g., <10–20 ppm). |
| Related Substances / Impurities | HPLC with Gradient Elution | Employs gradient elution to separate the main peak from potential process-related or degradation impurities; quantification is performed using area normalization or external standard methods to control impurity limits. |
| Test Item | Specification |
|---|---|
| Appearance | Off-white solid |
| Purity | >=98.0% (GC-MS) |
| Melting Point | 72-76°C |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Water Content (KF) | <=0.5% |
| Identification (NMR) | Consistent with structure |
| Identification (IR) | Consistent with structure |
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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.