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Actually got your catalog inquiry about the semaglutide intermediate and wanted to follow up directly — we've been supplying this specific building block for a while now, and most buyers go with the 99.9% purity because it cuts down on purification steps later. white to pale yellow powder form is pretty much standdard, and we've found it handles better than some competitors' material that tends to clump under humidity.
We're talking about Fmoc-L-Lys[Oct-(otBu)-Glu-(otBu)-AEEA-AEEA]-OH here, CAS 1662688-20-1, and the 1196.5 molecular weight is what you'd expect for this intermediate — it's tighter tolerance than most bulk suppliers manage, which matters when you're scaling up a semaglutide synthesis and don't want variability between batches. The HPLC purity is usually above 99.9% on our COAs, but we always include the full chromatogram so you can see the impurity profile yourself. 3 weeks or so is typical for UK delivrey form our warehose, give or take a few days depending on customs.
One thing that catches people off guard is that this intermediate isn't really suited for direct formulation work — it's a protected building block, not the final API, so you'll need to deprotect and couple it properly. We've had a few researchers ask about using it as-is, and it just won't work that way. The storage is straightforward though: keep it cool and dry, and it stays stable for 18 months or so without significant degradation.
What it does is give you cleaner coupling yields than the older Fmoc-Lysine derivatives because the AEEA spacers improve solubility in standard peptide synthesis solvents. We usually stock about 500 grams to 5 kilograms in the UK facility, but larger quantities need about 2-4 weeks lead time (check with us before ordering if you're in a rush). The pharmaceutical grade designation means every batch has full traceability paperwork, which some of our competitors skimp on.
Most buyers in the UK go with the 10-gram or 50-gram quantities first to validate their synthesis, then scale up — our company can customize packging to your preferred container size, whether that's amber vials or foil bags. Also, the price per gram drops significantly at 100 grams or more, so if you're planning multiple runs, it's worth ordering bulk upfront.
Our MOQ is typically 1 gram for this semaglutide intermediate. For larger quantities or custom orders to the UK, just let us know and we can adjust.
Lead time is usually 5-7 business days after order confirmation, plus shipping time to the UK, which takes about 3-5 days via express courier.
Yes, every batch comes with a COA showing the 99.9% purity and other specs like appearance and molecular weight. Just request it with your order.
Yes, it's strictly for research use only. Store it in a cool, dry place away from moisture and heat to keep the white powder stable.
Absolutely. We can package it in smaller vials or larger bags depending on your needs. Just specify the size when you place the order.
Needed this specific pharmaceutical intermediate for a critical research phase. The ordering process was straightforward, and the vendor provided clear documentation. Delivery was prompt and handled by a reliable courier service. The package arrived securely sealed with all necessary safety data sheets included. Product quality appears consistent with the specifications listed, and it was packaged appropriately to maintain integrity. Customer service was responsive to a preliminary inquiry regarding shipping timelines. Overall, a satisfactory procurement experience for a specialized compound. The logistical execution was commendable, ensuring the material arrived in a usable condition without delays. This allowed our project timeline to proceed as scheduled. The professionalism in handling the transaction was noted and appreciated. While the product itself is for intermediate use and not final application, its condition upon receipt met our initial quality control checks. The supplier seems reliable for such specific chemical needs. The entire process, from inquiry to delivery, was managed efficiently. This positive experience supports future consideration for similar procurement requirements. The attention to logistical detail and clear communication are significant positives in this niche market.
Quick delivery and the product arrived securely packaged. The quality of the white powder appears consistent with the description provided. Communication from the supplier was prompt and professional throughout the process. Overall, a satisfactory experience regarding logistics and service. The order was handled efficiently from start to finish.
Absolutely impressed with the overall experience! The delivery was incredibly fast and well-handled, arriving much sooner than anticipated. All items were securely packaged, ensuring they reached in perfect condition. As for quality, everything appears top-notch and exactly as described, which gives me great confidence in the products. Additionally, the customer service team was responsive and helpful, promptly addressing my inquiries with professionalism. A fantastic transaction from start to finish—highly recommended for anyone seeking reliable suppliers.
