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Product Introduction
CAS number: 73-31-4
Major functions
Yihe Biomedical sells a batch of Melatonin of 99% purity, CAS number 73-31-4, for sale. Though mainly they make health products and their main clients normally ask for a sleep-related ingredient with a correct assay, stable batch documentation, and raw material identity. Melatonin has been linked to several health benefits including anti-aging, tumor prevention, sleep promotion, and immune system regulation. However, according to Yihe Biomedical product disclosure, among these immune regulation is the least directly supported by them. Indeed, sleep promotion remains the chief characteristic of the many formulas that carry melatonin as the main component.
Reducing the packing is mainly done for a 99% specification melatonin, especially from dosage control, batch comparison, and formula consistency angles.
For the reason that, formulators can incorporate melatonin in various shipment forms of finished products: capsules, tablets, granules, powder blends, or any kind of layout of health care products as the typical examples. Therefore, buying in bulk is a very efficient way to benefit without interruption and at the same time, prevent stock depletion.
Use Target
Melatonin is most often incorporated in health care products. By the way, it has very limited other uses. Therefore, the samples of sleep-supporting formulas, nighttime wellness products, and supplements oriented to relaxation are shown below. Since Melatonin is a dose-specific product, the consumers, in the first place, should choose the desired dosage forms and respective local compliance requirements for production before commercial launch. Besides content uniformity, other aspects such as excipient compatibility, capsule or tablet performance, packaging protection, and shelf-life behavior are the ones that require attention during the testing phase.
Company's advantages
Their head office is situated in Hangzhou, a city where the company operation chiefly concentrated on the customer-oriented, quotation, document management, and shipment follow-up processes.
In 2019, their Nanning factory began operating. Their plant measures 3300㎡ in production area and their seven extraction tanks each 6 tons can/could annually process more than 2000 tons of plant raw materials.
The sound quality control system comprises raw material traceability, incoming goods check, finished products testing, sample retention, and batch number tracking
Batches get linked through production records, testing documents, and -logistics information. Besides, the company also possesses certificates like ISO 9001:2015, HALAL, Kosher, and organic-related certification resources.
Why Choose Us
Pre-Sales and After-Sales Support
Pre-Sales Support
1. Prompt Response to Queries
We respond to queries in 2 hours and send first quotes and specs within 24 hours.
2. Sampling Services
We give you the samples for FREE by courier. We enclose the Certificate of Analysis (COA) and usage instruction with the samples.
3. Technical Advisory
We explain to you the regulations of your markets (such as U.S. Dietary Supplement cGMP, EFSA standards).
4. Custom Sample Production
Based on your recipe, we carry out a small batch trial at lab, provide the sample delivery within 3–5 business days.
After-Sales Support
1. Use Guidance
We provide product solubility, incompatibility & contraindications, recommended dosage, storage conditions, etc. technical data sheets (TDS).
2. Customer Complaint Management
If the quality is not satisfactory, a team will be created within 48 hours to offer replacement or refund for free, and the Quality Director will issue a corrective action report.
3. Continuous Focus on Customer Satisfaction
Every quarter, we take the initiative to contact our customers and offer them those documents that are updated CoAs, literature, and application research materials related to products from the same batch.
4. Stocking Plan for the Long Run
We stock a safety inventory (≥3 months’ typical usage) of top-selling products to avoid production downtime.
FAQ
Q1: What product is registered under the CAS 73-31-4?
A: It is melatonin.
Q2: What is the company’s product quality rating?
A: Yihe Biomedical manufactures melatonin with 99% purity.
Q3: Which sales channel will the company consider as main sector?
A: The company sees healthcare products as the largest consumer goods.
Q4: Which product features are claimed by the company in the product catalog?
A: The product catalog shows that the product is potential anti-aging, anti-tumor, sleep aid, and immune function regulator.
Q5: What procedures does the company advise the clients to follow before doing the final purchase?
A: Customers are advised to go through assay, product appearance check, blend uniformity test, compatibility, dosage form suitability and storage stability tests prior to placing the full order.
Shipping Details
As for the packing of melatonin, it will be done in 3 working days after receiving order confirmation if materials are available in the warehouse. If it is customization or non-standard packaging, production will be expected to be 15-25 working days.
A piece of standard packing for melatonin is a 25 kg drum, but 1 kg trial packs are also used for sample assessment. Yihe Biomedical shall be opened to negotiating the customers’ inventory of major products, which will help them in steadily resisting procurement timelines for long-term orders.
| Company | Hangzhou Yihe Biomedical Technology Co., Ltd. |
| Business Layout | Hangzhou trade office for international business, customer communication, and logistics coordination; Nanning factory for production and quality control |
| Factory Location | Nanning, Guangxi, close to botanical raw material sources |
| Factory Operation | Nanning factory officially started production in 2019 |
| Factory Area | About 3,300 m² |
| Extraction Capacity | 7 extraction tanks, 6 tons each |
| Annual Raw Material Capacity | Over 2,000 tons of botanical raw materials per year |
| Product Forms | Single compounds, standardized extracts, ratio extracts, compound granules, and customized grades |
| Quality Documents | COA, TDS, MSDS/SDS, specification sheet; Halal, Kosher, and organic documents available for selected products |
| Testing Capability | HPLC, GC/MS, ICP-MS, GC-ECD / GC-MS, headspace gas chromatography, moisture, ash, and particle size testing |
| Sample Support | Samples can be supplied with sample COA and basic product information |
| MOQ Reference | Regular extracts: 25 kg/drum; 1 kg trial pack available; customized products can be discussed from around 5 kg depending on process |
| Lead Time Reference | Stock products: around 3 working days; customized production: around 15–25 working days |
| Traceability | Each batch has a unique batch number linked to raw materials, production records, test reports, and logistics records |
| Quality Response | Quality complaints are handled within 48 hours with internal investigation and corrective action when needed |




