HGH191AA Peptide Vial (Somatropin)

Direct Anti Peptide supplies HGH 191AA (Somatropin) as a lyophilized research peptide vial of ≥98% purity, rigorously verified by HPLC and mass spectrometry. This product is manufactured exclusively for in vitro laboratory research applications. For research use only. Not for human or veterinary use. Not for clinical, diagnostic, or consumptive applications.

Product Overview

HGH 191AA, commonly referenced under the International Nonproprietary Name Somatropin, is a 191-amino-acid polypeptide structurally analogous to endogenous human growth hormone. Within controlled laboratory environments, researchers investigate this peptide in relation to protein anabolic signaling pathways, adipose tissue lipolytic cascades, and connective tissue growth factor modulation. Direct Anti Peptide offers this compound as a high-purity lyophilized vial, making it a preferred choice for scientists seeking a reliable, reproducible research reagent available to buy online at a competitive price.

Peptide Structure & Amino Acid Sequence

HGH 191AA is a single-chain polypeptide consisting of exactly 191 amino acid residues, mirroring the full-length sequence of the pituitary-derived growth hormone isoform. The molecule contains two intramolecular disulfide bridges that contribute to its characteristic tertiary fold and receptor-binding conformation. This structural complexity makes precise synthesis and quality verification essential, both of which are central to the manufacturing standards applied to every vial available for sale through Direct Anti Peptide.

Chemical & Physical Characteristics

• Peptide Length: 191 amino acids
• Molecular Weight: Approximately 22,124 Da
• Appearance: White to off-white lyophilized powder
• Solubility: Soluble in aqueous buffered solutions under laboratory conditions
• CAS Number: 12629-01-5
• Purity: ≥98% by HPLC analysis
• Format: Sterile lyophilized vial

Purity & Analytical Verification (HPLC & MS)

Every batch of HGH 191AA peptide vials supplied by Direct Anti Peptide undergoes dual-method analytical verification. Reverse-phase high-performance liquid chromatography (RP-HPLC) confirms that the active peptide fraction constitutes ≥98% of the total measurable content, with all impurity peaks quantified and documented. Complementary mass spectrometry analysis validates the correct molecular mass, confirming structural integrity and ruling out truncation, oxidation, or misfolded variants. Certificates of Analysis reflecting these results are available upon request for every lot number.

Quality Control & Lyophilization Integrity

Lyophilization — the process of freeze-drying under controlled vacuum conditions — is the gold standard for preserving polypeptide potency during long-term storage. For a structurally complex molecule like HGH 191AA, this process is particularly critical. Removing residual moisture to below accepted pharmacopoeial thresholds prevents hydrolytic degradation and microbial proliferation. Each sterile glass vial is sealed under inert atmosphere to maintain lyophilization integrity from the point of manufacture through to delivery. This approach ensures that researchers receive a product that retains full structural and biological research utility upon arrival.

Safety, Handling & Laboratory Precautions

HGH 191AA peptide vials are intended exclusively for use by trained laboratory professionals operating within appropriately equipped research facilities. Standard laboratory personal protective equipment — including nitrile gloves, safety eyewear, and a laboratory coat — should be worn during all handling procedures. Avoid inhalation of lyophilized powder. Dispose of all materials in accordance with applicable institutional biosafety and chemical waste regulations. This compound is not approved for administration to humans or animals under any circumstances.

Reconstitution, Packaging & Storage

HGH 191AA is supplied as a lyophilized powder in a sterile, sealed glass vial suitable for laboratory reconstitution using appropriate research-grade aqueous solvents. Reconstitution should be performed only by qualified researchers following validated laboratory protocols. Upon reconstitution, the solution should be handled according to institutional guidelines for research-grade peptide reagents. Store lyophilized vials at −20°C in a frost-free freezer, protected from light and moisture. Once reconstituted, store at 2–8°C and use within a timeframe consistent with your laboratory’s validated stability data.

Intended Research Use & Market Positioning

HGH 191AA is positioned as a premium research-grade reagent for academic institutions, biotechnology companies, and contract research organizations investigating growth hormone receptor biology, metabolic signaling, and related endocrinological pathways. It is not a pharmaceutical product and carries no approved therapeutic indication. Researchers seeking to buy a high-purity, analytically verified somatropin-sequence peptide for sale at a best-in-class price point will find Direct Anti Peptide’s offering to be a dependable, compliance-ready solution.

Ordering, Availability & Fulfillment

Direct Anti Peptide maintains consistent stock of HGH 191AA peptide vials, enabling prompt order processing and reliable dispatch. Orders placed through our secure eCommerce platform are fulfilled with discreet, temperature-conscious packaging to preserve lyophilization integrity during transit. Bulk and institutional purchasing inquiries are welcomed. Order now to benefit from our competitive pricing, responsive customer support, and verified analytical documentation included with every shipment.

Legal & Regulatory Disclaimer

For research use only. Not for human or veterinary use. Not for clinical, diagnostic, or consumptive applications. HGH 191AA (Somatropin) peptide vials sold by Direct Anti Peptide are intended solely for in vitro scientific research by qualified professionals. This product 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 procurement and use of research peptides.