> 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/tirzepatide/faq-library/tirzepatide-faq.md). # tirzepatide-faq RPL Peptide Official Technical Documentation FAQ Library *** ## Frequently Asked Questions — Tirzepatide ### Product Information #### 1. What is tirzepatide peptide? Tirzepatide is a synthetic 39-amino-acid dual receptor agonist peptide investigated for interactions with GIP and GLP-1 receptor systems and associated biological signaling pathways. It is a research-grade material for laboratory use only. #### 2. What is the CAS number for tirzepatide? Tirzepatide's CAS number is **2023788-19-2**. #### 3. How is tirzepatide classified scientifically? Tirzepatide is classified as a synthetic metabolic research peptide and a dual incretin receptor agonist peptide. #### 4. What is the molecular weight of tirzepatide? The molecular weight of tirzepatide is approximately **\~4,813 Da**. #### 5. How many amino acids does tirzepatide contain? Tirzepatide contains **39 amino acids**. #### 6. What receptors does tirzepatide interact with? Research indicates that tirzepatide is investigated for interactions involving both **GIP (glucose-dependent insulinotropic polypeptide)** and **GLP-1 (glucagon-like peptide-1)** receptor pathways. #### 7. What purity does RPL Peptide supply? RPL Peptide supplies tirzepatide at **≥99.0% purity** as determined by HPLC analysis at 214 nm. ### Quality & Documentation #### 8. Do you provide a Certificate of Analysis (COA)? Yes — every batch ships with a full COA including HPLC purity data, LC-MS identity confirmation, batch number, water content, and endotoxin results. #### 9. What analytical methods are used for quality testing? Analytical methods include: HPLC (purity), LC-MS (identity), Karl Fischer (water content), LAL test (endotoxin), and UPLC (chromatographic profiling). #### 10. Is batch traceability documentation available? Yes — every batch has a unique lot number linking manufacturing records, analytical data, QC review, COA issuance, and shipment records. #### 11. Can I request third-party analytical validation? Yes — third-party analytical validation is available upon request. ### Handling & Storage #### 12. How should tirzepatide be stored? **Lyophilized**: -20°C (2+ years) or 2–8°C (12 months). Store in sealed vial, protected from light and moisture. **Reconstituted**: 2–8°C for up to 30 days. Aliquot to avoid freeze-thaw cycles. #### 13. What is the recommended reconstitution solvent? **Bacteriostatic water (0.9% benzyl alcohol)** is recommended. Sterile water for injection, PBS, or 0.9% saline are also suitable alternatives. #### 14. What is the recommended concentration range? **1–5 mg/mL** is the recommended concentration range for standard research applications. #### 15. Can I vortex tirzepatide after reconstitution? **No** — DO NOT vortex or shake vigorously. Gently swirl until dissolved. Vortexing may cause peptide aggregation. #### 16. How long is reconstituted tirzepatide stable? Reconstituted tirzepatide is stable for **30 days at 2–8°C** and **7 days at room temperature**. ### Supply & Procurement #### 17. What package sizes are available? Standard sizes: **5 mg, 10 mg, 20 mg, and 50 mg** per vial. Custom sizes available upon request. #### 18. What is the minimum order quantity (MOQ)? Standard MOQ is **1 box (10 vials)**. OEM/bulk MOQs vary by specification. #### 19. Do you offer OEM/private label services? Yes — custom vial labeling, packaging, blend formulations, and flexible batch sizes (50–10,000+ vials per SKU). #### 20. What is the lead time? In-stock products ship within **2 business days**. Custom synthesis: **7–25 days** depending on quantity. #### 21. How is tirzepatide shipped internationally? Via **DHL, FedEx, or UPS** with full tracking. Options: standard ambient, cold-chain (2–8°C ice packs), or dry ice (-20°C). #### 22. What payment methods are accepted? Bank transfer (TT), Wise, and other secure payment options. #### 23. What documentation is included with shipment? Commercial invoice, packing list, Certificate of Analysis (COA), and Material Safety Data Sheet (MSDS). ### Research Applications #### 24. What research applications is tirzepatide used for? Tirzepatide is used in receptor pharmacology, metabolic pathway investigation, peptide engineering studies, molecular signaling research, and comparative peptide research. #### 25. Is tirzepatide for human or veterinary use? **No** — Tirzepatide is for **laboratory research use only**. NOT for human or veterinary consumption, medical treatment, diagnosis, or therapeutic application. *** © 2026 RPL Peptide Official Technical Documentation rplpeptides.com --- # 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. 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