Reconstitution and Usage Procedures
PT-141 is shipped as a lyophilized powder and must be reconstituted before administration experiments. Direct administration of the dry powder is strictly prohibited.
Before reconstitution, allow the vial to reach room temperature for 15-20 minutes to prevent condensation from forming on the cold vial and affecting peptide stability.
Wipe the rubber stopper with 75% alcohol and allow it to evaporate completely. Antibacterial aqueous solution (containing benzyl alcohol) is preferred as the reconstitution solvent; if sterile saline is used, which lacks antibacterial components, the usage period after reconstitution should be shortened.
Draw the solvent into a syringe and slowly inject it into the vial along the wall, avoiding direct impact on the lyophilized cake. Then gently swirl the vial to dissolve the powder. Vigorous vortexing or shaking is prohibited to prevent peptide chain oxidation and degradation. A qualified solution is clear and colorless. Discard any solution that is cloudy or contains visible particles and do not proceed with experiments.
Concentration Preparation: Research commonly uses concentrations of 1-10 mg/mL, determined according to animal experimental protocols. A common preparation for a 5 mg vial is to add 2.5 mL of antibacterial water to obtain a 2 mg/mL working solution.
Routine of Administration: Subcutaneous injection is the primary method in research; some literature also studies intranasal administration. Dosage is strictly based on the animal model and experimental protocol. Dosage varies significantly between different species and strains; human drug dosages cannot be directly applied.
Aseptic technique is maintained throughout the procedure to minimize prolonged contact between the solution and air, reducing the risk of oxidation.
Application Scenarios
Research Directions
* Melanocortin Receptor Pathway Research: Used for in vitro cell experiments and animal model pharmacological studies related to the MC3R and MC4R receptor signaling pathways and the G-s/cAMP signaling axis, elucidating the central nervous system-endocrine regulatory mechanisms.
Sexual Function-Related Pharmacological Models: Animal-based studies of behavioral models related to libido and sexual arousal; comparative studies of the differences in action pathways with PDE5 inhibitors; efficacy exploration for models of sexual dysfunction induced by psychological stress and drugs.
Pharmacodynamic and pharmacokinetic evaluation: Used to assess the in vivo efficacy, tolerability, and adverse reaction characteristics of candidate drugs, providing basic data for new drug development.
Clinical Formulation Background: Bremerlongdan finished product, approved for the treatment of hypoactive sexual desire disorder in premenopausal women. This indication is a GMP-certified pharmaceutical-grade finished product with strict dosage limits: no more than once every 24 hours and no more than 8 times per month. It carries the risk of adverse reactions such as increased blood pressure and nausea. It is a prescription drug and is clearly distinguished from research raw materials. Research raw materials lack pharmaceutical-grade sterility and impurity control guarantees and cannot be directly used in humans.
Storage Conditions:
Unreconstituted lyophilized powder: Store in a sealed, light-protected container at -20°C, away from moisture. Under these conditions, the shelf life can reach over 24 months; repeated freeze-thaw cycles should be avoided. Short-distance transport and short-term exposure to 15-25°C environments are tolerable; upon arrival, transfer to -20°C for freezing storage as soon as possible.
Reconstituted liquid working solution: Store refrigerated at 2-8°C, protected from light. Do not freeze, as freezing will cause peptide denaturation and inactivation. Reconstitute using antibacterial water: It is recommended to use all samples within 28 days.
Reconstitute using ordinary sterile physiological saline: There is no antibacterial protection; even with aseptic technique, it is recommended to use within 7 days to prevent microbial growth.
Each sampling operation should be as quick as possible to minimize exposure to air and light. Repeated sampling will slowly reduce peptide activity. Discard the solution immediately if it becomes discolored or cloudy.
FAQ
Q: What is the minimum order quantity?
A: The minimum order quantity is 10 bottles/set.
Q: How long does it take to ship?
A: In-stock orders will be shipped within 24 hours.
Q: What purity can you provide?
A: Standard purity 99%.
Q: Which courier service do you use?
A: FedEx, DHL, UPS, and postal services are available.
Q: How long does shipping take?
A: Approximately 10-15 days.
Q: Can you provide a COA (Certificate of Account) quality inspection report and HPLC (High-Performance Computing) report? A: Yes, we can provide this service. All goods undergo professional testing before shipment.
Q: Do you support OEM labeling?
A: Yes, we support OEM labeling, but a minimum order quantity must be met.
Q: How is after-sales service handled?
A: After the customer signs for the goods, if the quality problem is confirmed to be caused by our production, they can enjoy free replacement or refund. We adhere to a pragmatic and responsible service principle, actively respond to and properly handle all kinds of issues, without shirking responsibility or avoiding problems, and do our best to protect the rights and interests of our customers.
Q: What payment methods are available?
A: We support bank transfer, Bitcoin, Transferwise, and Xoom.
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