Follistatin 344 Nasal Spray

Product Overview

Follistatin 344 Nasal Spray is a specialized research-grade peptide formulation available exclusively through Direct Anti Peptide for qualified laboratory and scientific research applications. Follistatin 344 is a naturally occurring glycoprotein variant distinguished by its capacity to bind and neutralize myostatin — a negative regulator of skeletal muscle growth — alongside other members of the TGF-β superfamily. Delivered via a precision nasal spray mechanism, this formulation is engineered to support advanced in-vitro and in-vivo research into muscle biology, tissue regeneration, and cellular differentiation. Researchers seeking to buy Follistatin 344 Nasal Spray online will find Direct Anti Peptide’s offering to be a reliable, competitively priced, and compliance-ready solution.

Peptide Structure & Amino Acid Sequence

Follistatin 344 is a 344-amino-acid isoform of the follistatin protein, produced through alternative splicing of the FST gene. It is one of the primary circulating isoforms and is characterized by a heparin-binding domain at its C-terminus that influences its tissue distribution and binding affinity. The protein contains three follistatin domain repeats (FSD1, FSD2, FSD3), each contributing to its high-affinity binding of activins, bone morphogenetic proteins (BMPs), and myostatin. This structural architecture makes Follistatin 344 a particularly valuable research tool for studying ligand-receptor interactions within the TGF-β signaling cascade and their downstream effects on muscle stem cell activation and skeletal muscle hypertrophy.

Chemical & Physical Characteristics

• Peptide Isoform: Follistatin 344 (FST344)
• Molecular Weight: Approximately 31.5 kDa (non-glycosylated backbone)
• Appearance: Lyophilized white to off-white powder, reconstituted into aqueous nasal spray solution
• Solubility: Soluble in sterile aqueous buffers at physiological pH
• CAS Reference: Follistatin protein family (human recombinant origin)
• Delivery Format: Nasal spray solution for transmucosal research delivery modeling
• Purity: ≥98% as confirmed by HPLC and mass spectrometry

Purity & Analytical Verification (HPLC & MS)

Every batch of Follistatin 344 Nasal Spray supplied by Direct Anti Peptide undergoes rigorous analytical testing prior to release. High-performance liquid chromatography (HPLC) is used to confirm peptide purity at ≥98%, ensuring that researchers receive a product free from significant impurities or degradation byproducts. Mass spectrometry (MS) verification confirms molecular identity and sequence integrity, providing an additional layer of quality assurance. These dual-verification protocols align with internationally recognized standards for research-grade peptide supply and ensure data reproducibility across experimental applications.

Quality Control & Lyophilization Integrity

Prior to formulation into the nasal spray delivery system, the Follistatin 344 active peptide component is produced under controlled lyophilization conditions designed to preserve structural integrity and biological activity throughout the manufacturing and storage lifecycle. Lyophilization removes moisture under vacuum to yield a stable, long-shelf-life intermediate. The final nasal spray formulation is then prepared under aseptic conditions, with each unit sealed to prevent contamination. Batch-level quality control records are maintained to ensure full traceability and consistency across production runs, giving research institutions confidence in the reproducibility of their experimental results.

Safety, Handling & Laboratory Precautions

Follistatin 344 Nasal Spray is supplied strictly for qualified research use in controlled laboratory environments. Personnel handling this compound should follow standard laboratory safety protocols, including the use of appropriate personal protective equipment (PPE) such as gloves, lab coats, and eye protection. The compound should be handled in a biosafety cabinet where applicable. Avoid exposure to repeated freeze-thaw cycles once reconstituted. This product must not be administered to humans or animals under any circumstances. All handling, storage, and disposal must comply with applicable institutional biosafety guidelines and local regulatory requirements.

Reconstitution, Packaging & Storage

Follistatin 344 Nasal Spray is supplied in a ready-to-use nasal spray format, pre-formulated in a sterile aqueous buffer for direct laboratory application. The product should be stored at 2–8°C upon receipt and protected from direct light exposure to maintain stability and peptide integrity. Do not freeze the nasal spray formulation. Ensure the spray nozzle cap is securely fastened between uses to prevent evaporation or contamination. Refer to the accompanying certificate of analysis (CoA) for batch-specific storage recommendations and expiry guidance. All reconstitution and handling must be performed exclusively within a qualified research setting by trained scientific personnel.

Intended Research Use & Market Positioning

Follistatin 344 Nasal Spray is positioned as a premier research tool for scientists investigating myostatin inhibition, skeletal muscle hypertrophy mechanisms, muscle stem cell biology, tissue repair pathways, and growth factor regulation. Its nasal delivery format provides researchers with a model for studying transmucosal peptide absorption kinetics and bioavailability relative to alternative delivery routes. Research applications may also extend to the study of muscular dystrophy models, connective tissue repair, cellular differentiation, and sports science rehabilitation protocols at the preclinical level. Direct Anti Peptide offers this product at a best price point for research institutions, universities, and independent laboratories seeking reliable, high-purity peptide reagents.

Ordering, Availability & Fulfillment

Direct Anti Peptide makes it straightforward to order Follistatin 344 Nasal Spray online with secure checkout, fast processing, and reliable international fulfillment. All orders are subject to verification of research intent and compliance with applicable import/export regulations in the destination country. Our team is committed to providing consistent stock availability, competitive pricing, and responsive customer support for research institutions and qualified buyers worldwide. Place your order today and benefit from Direct Anti Peptide’s commitment to quality, compliance, and rapid dispatch.

Legal & Regulatory Disclaimer

For research use only. Not for human or veterinary use. Not for clinical, diagnostic, or consumptive applications. Follistatin 344 Nasal Spray is sold exclusively as a laboratory research reagent. Direct Anti Peptide makes no claims regarding the therapeutic, diagnostic, or health-related efficacy of this product. Purchasers are solely responsible for ensuring that acquisition, handling, and use of this compound comply with all applicable local, national, and international laws and regulations. This product is not approved by any regulatory authority for use in humans or animals. By purchasing this product, the buyer confirms they are a qualified research professional operating within a licensed research facility.