Follistatin 344 Peptide Vial

Direct Anti Peptide offers Follistatin 344 Peptide Vial at ≥98% purity, supplied as a lyophilized powder in a sterile glass vial for laboratory research applications. This peptide is characterized by its role in myostatin inhibition pathways and is widely studied in muscle biology and tissue repair research. For research use only. Not for human or veterinary use. Not for clinical, diagnostic, or consumptive applications.

Product Overview

Follistatin 344 is a naturally occurring glycoprotein-derived peptide isoform that has attracted significant scientific interest due to its capacity to bind and neutralize myostatin — a member of the TGF-β superfamily responsible for limiting skeletal muscle growth. In controlled laboratory settings, Follistatin 344 is studied for its role in regulating muscle fiber development, satellite cell activation, and tissue regeneration processes. Researchers investigating muscle biology, endocrinology, and growth factor signaling frequently include Follistatin 344 in their experimental models. Available for sale at Direct Anti Peptide, this vial-format research peptide is manufactured to the highest quality standards and is ready for immediate laboratory use.

Peptide Structure & Amino Acid Sequence

Follistatin 344 is a 344-amino acid isoform of the follistatin protein family. It contains multiple cysteine residues that form critical disulfide bonds, contributing to the peptide’s three-dimensional folding and biological binding affinity. The cysteine content is particularly relevant in the context of myostatin inhibition — these residues facilitate high-affinity binding to myostatin’s active domain, effectively suppressing its signaling activity. Follistatin 344 also contains a heparin-binding domain that influences its localization and activity in tissue environments, making it a structurally complex and scientifically valuable research target.

Chemical & Physical Characteristics

• Peptide Isoform: Follistatin 344 (FST344)
• Molecular Weight: Approximately 35.8 kDa (core protein, pre-glycosylation)
• Form: Lyophilized (freeze-dried) white to off-white powder
• Solubility: Soluble in sterile aqueous buffer (research-grade)
• CAS Number: 95642-34-5 (Follistatin reference)
• Storage Temperature: -20°C (long-term); 2–8°C (short-term, up to 4 weeks)
• Stability: Stable for 24+ months when stored lyophilized under recommended conditions

Purity & Analytical Verification (HPLC & MS)

Every batch of Follistatin 344 supplied by Direct Anti Peptide undergoes rigorous analytical testing to confirm identity, purity, and structural integrity. High-Performance Liquid Chromatography (HPLC) is used to verify that each vial meets or exceeds the ≥98% purity threshold. Mass Spectrometry (MS) confirms the molecular weight and sequence accuracy of the peptide. These dual-verification protocols ensure that researchers receive a consistent, reliable product suitable for demanding experimental workflows. Certificate of Analysis (CoA) documentation is available upon request for every production batch.

Quality Control & Lyophilization Integrity

Follistatin 344 is lyophilized using validated freeze-drying protocols that preserve peptide structure, potency, and long-term stability. The lyophilization process removes moisture while maintaining the native conformation of the peptide, preventing degradation during storage and transit. Each vial is sealed under inert conditions to eliminate oxidative exposure. The sterile borosilicate glass vial is non-reactive, protecting the contents from light, humidity, and environmental contaminants. Quality control checks are performed at multiple stages of production, including pre-lyophilization, post-lyophilization, and final packaging inspection.

Safety, Handling & Laboratory Precautions

This product is intended exclusively for trained laboratory professionals operating within regulated research environments. Standard laboratory safety protocols must be observed at all times when handling this peptide. Researchers should wear appropriate personal protective equipment (PPE), including gloves, lab coat, and eye protection. Avoid exposure to excessive heat, direct sunlight, or repeated freeze-thaw cycles, as these conditions may compromise peptide integrity. This product is not approved for use in humans or animals and must never be administered in any biological system outside of a controlled, authorized research context.

Reconstitution, Packaging & Storage

Follistatin 344 is supplied in a sealed, sterile glass vial in lyophilized powder form. For laboratory reconstitution, researchers should consult peer-reviewed literature and applicable institutional protocols for appropriate research-grade solvents and buffer systems. Once reconstituted, the solution should be aliquoted and stored at -20°C to minimize degradation. Avoid repeated freeze-thaw cycles post-reconstitution. Packaging is designed to maintain sterility and structural integrity throughout shipping and storage. All vials are individually labeled with batch number and product identification for full traceability.

Intended Research Use & Market Positioning

Follistatin 344 is positioned as a premium-grade research peptide for scientific investigators studying myostatin regulation, skeletal muscle hypertrophy mechanisms, satellite cell biology, and growth factor antagonism. It is widely referenced in academic and pre-clinical research literature relating to muscle wasting conditions, regenerative biology, and endocrine signaling. Direct Anti Peptide supplies this peptide to qualified research institutions, universities, and independent laboratories seeking consistent, analytically verified reagents at competitive prices.

Ordering, Availability & Fulfillment

Follistatin 344 Peptide Vial is available to buy online now through Direct Anti Peptide. We offer competitive best-price positioning, fast order processing, and reliable fulfillment to research institutions worldwide. Orders are dispatched promptly with appropriate cold-chain packaging to maintain product integrity during transit. Our team is available to assist with bulk orders, institutional purchasing, and CoA documentation requests. Order now and experience the Direct Anti Peptide standard of quality and service.

Legal & Regulatory Disclaimer

For research use only. Not for human or veterinary use. Not for clinical, diagnostic, or consumptive applications. Follistatin 344 Peptide Vial is sold exclusively as a laboratory research reagent. It has not been evaluated or approved by any regulatory authority for therapeutic, prophylactic, or diagnostic use. Purchasers are solely responsible for ensuring compliance with all applicable local, national, and international laws and regulations governing the purchase, handling, storage, and use of research peptides. Direct Anti Peptide assumes no liability for misuse or unauthorized application of this product.