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Someone running a circadian rhythm study or an in-vitro binding assay usually pulls this from -20°C storage right before reconstituting it, so they're not chasing degraded product mid-experiment.
It's basically a white crystalline powder at 99% purity or better per HPLC, and that CAS (73-31-4) matches the standard melatonin backbone — nothing exotic about the molecular formula, C13H16N2O2, and the molecular weight of 232.28 g/mol is what you'd expect for endogenous melatonin.
We've handled enough bulk orders to know solvent batches with lower water solubility can cause headaches; at 5 mg/mL in water it dissolves fine for most application, though typical lead times for 100-gram runs run 15-20 working days or so (usually 2-4 weeks).
What it's not suited for is any kind of direct human supplementation at food-grade labeling — it's classified strictly as a research chemicla, and we're clear on that with packaging in alumnum foil bags or sealed drums.
Buyers often ask about stability after the initial freeze-thaw cycle, and honestly, it's stable under recommended conditions for the full 24-month shelf life if you keep it dark and dry at -20°C; the density of 1.43 g/cm³ doesn't matter much unless you're calculating bed volume in a column.
We usually have stock on standerd quantities — MOQ is typically 100 grams — but confirm lead time if you're pushing beyond that, because custom drum sizes add a week to packing schedules.
We typically start at 1 kg for standard orders, but we can discuss smaller quantities if you're testing the product. Just reach out for a custom quote.
Yes, every batch comes with a CoA showing the ≥99% purity and other specs like appearance and density. It's included with your shipment.
Absolutely, we can pack it in your preferred sizes, from small aluminum foil bags to larger drums, and add your own label. Just let us know your requirements.
For stock items, we usually ship within 3-5 business days after payment. Larger custom orders may take 7-10 days depending on packaging.
Keep it at -20°C in a dark, dry place, like a freezer. Avoid moisture and light exposure—once opened, reseal the bag tightly to maintain stability.
Naturally, I was a bit anxious about ordering a supplement online, but this experience was surprisingly smooth. The shipping was incredibly fast; my order arrived well before the estimated delivery date, which was a fantastic first impression. The packaging was secure and professional, ensuring the product inside was perfectly protected. Regarding quality, the powder appears exactly as described—fine and consistent. While I cannot comment on specific efficacy as I haven't used it yet, the presentation and purity claim (99% pure) align with a high-quality product. Customer service was responsive and polite when I had a pre-shipment inquiry. Overall, from logistics to the tangible product received, this has been a very positive transaction. I would feel confident ordering from this supplier again based on this initial experience.
Bulk orders arrived promptly, which was a relief for my tight schedule. The packaging was secure and intact, ensuring the product's safety during transit. However, I did notice some inconsistencies in the powder's texture upon inspection, which raised minor concerns about uniformity. Customer service was responsive when I inquired about this, offering a helpful explanation and assurance. Overall, a decent experience with room for improvement in quality control.
