Silymarin Powder 60%/80% UV – Cost-Effective Alternative to Standard Milk Thistle Extract, OEM ODM, Free Sample, Custom Private Label

It tests at roughly 62.1% minimum for the 60% UV grade, which means there's no filler maltodextrin cut into the active compound ratio like most peer supliers do. The molecular weight sits at 482.44 g/mol for C25h22o10, and we run three separate UV tests per production batch to confirm that number isn't just on paper. CAS 65666-07-1 is what to reference when you look up the registry — it's the standerd identifier for silymarin extracted form dried milk thistle fruit, no synthetic route used here.

You'll get a yellow to brown free-flowing powder (usually 60% or 80% UV) that dissolves readily in ethyl acetate and methanol — better than reagent grade for this application because there's no hidden carrier. It's basically intended for health care formulation work, not supplement filling directly, though a lot of buyers go with the 80% grade for tablet blends. The 20 units or so MOQ is manageable, and we keep stock on both grades, so sample availability is usually just a quick confirmation away — lead time is about 2 days for a free sample.

3. Storage is normal cool dry conditions, nothing special, and we've kept unopened drums stable with full active content for two years pretty consistently. The 25 kg drum packging is standard (35x42 drum spec), but what most people don't think to ask is that the powder tends to cake slightly if you leave it open for too long — not a reproducibility issue, just a handling note for larger batches. Every lot goes through heavy metal and microbial limits testing, and we've rej

We run one HPLC-UV comparison against a known standard on top of three batch UV tests — that's tighter tolerance than most peer labs use for their COAs. Anyway, if you're new to the field, just be aware this isn't a synthetic isolate; it's a complex flavonolignan mix that varies with harvest conditions, so that 62.1% floor is important for reproducibility. It's not suited for intravenous dissolution work without further purification because of those residual milling particles (usually <0.L5 ppm but still present).

The 60% grade works fine for most oral formulation research, and honestly, most buyers just go with it over the 80% because the cost difference doesn't justify the extra purity for their batch yields. Private label is straightforward — we'll print your label on the drum, but confirm artwork lead times if you need anything beyond the standard Qingmei branding. Shiping out of China on a consignment basis takes about 20 business days or so, depending on port congestion, but we usually have stock for the 24 kg per drum unit.