> For the complete documentation index, see [llms.txt](https://docs.rplpeptides.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.rplpeptides.com/docs/faq/product-faq.md). # Product FAQ ## 1. What is the minimum order quantity (MOQ)? Standard MOQ is 10 mg for most research peptides. Custom synthesis orders may have higher MOQ requirements depending on the sequence length and complexity. ## 2. Does RPL Peptide offer custom peptide synthesis? Yes. Custom synthesis services include: standard peptide synthesis (up to 50 amino acids), modified peptides (PEGylation, fluorescent labels, biotinylation, cyclization), peptide libraries, and TFA-to-acetate counterion exchange. ## 3. What is the typical lead time? Standard products in stock: 2–3 business days. Custom synthesis: 7–25 business days depending on sequence length, modifications, and purity requirements. Bulk orders (≥1 g): please contact for lead time. ## 4. How are products shipped? All peptides are shipped as lyophilized powder in sterile, nitrogen-purged vials. Temperature-controlled shipping (dry ice or ice packs) is available for temperature-sensitive products. International shipments include all required documentation. ## 5. What is the shelf life of RPL Peptide products? Lyophilized peptides: 24–36 months when stored at -20°C, protected from light and moisture. Reconstituted peptides: up to 30 days at 2–8°C or up to 6 months at -20°C (single-use aliquots recommended). ## 6. Do you provide bulk pricing? Yes. Volume discounts are available for orders ≥100 mg and ≥1 g. Contact for a customized quotation. ## 7. Can I request a specific batch for my research? Yes. If you have previously tested a specific batch and wish to order from the same batch, we can check current availability. *** *For product inquiries: * --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.rplpeptides.com/docs/faq/product-faq.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.