IGF-1 LR3 Product Introduction
IGF-1 LR3, full name Long Arginine 3 Insulin-like Growth Factor 1, is a high-stability recombinant polypeptide with the exclusive CAS registry number 946870-92-4. This product consists of 83 amino acid residues, with a molecular weight of 9117.5 Da. It has two distinct structural modifications compared with natural IGF-1: a 13-amino-acid extension at the N-terminal, and arginine substitution for glutamic acid at the 3rd amino acid site. The unique molecular structure lowers binding affinity with IGF binding proteins and improves structural stability in biochemical environments, widely applied in cell culture experiments, receptor pathway research and laboratory biochemical analysis.
The product adopts standardized E. coli recombinant expression technology for mass production. High-quality engineering strains and sterile culture medium are selected as core raw materials, all undergoing strict microbial and purity screening before fermentation. The whole expression, induction and lysis procedures are completed in constant-temperature sterile workshops. Fermentation temperature, pH value and incubation duration are precisely controlled and fully recorded to guarantee consistent amino acid sequences of each batch of finished products, avoiding abnormal expression fragments and structural defects.
After bacterial lysis, crude protein is processed through multi-stage filtration, ion exchange chromatography and reversed-phase HPLC fine purification to fully remove bacterial residues, heteroproteins, endotoxins and unpurified fragments. The final finished product is made by vacuum sterile lyophilization, presenting white to off-white loose freeze-dried powder with even texture, no caking, discoloration or visible foreign particles. HPLC testing shows core purity reaches 99.8%, single unknown impurity controlled below 0.5%, and endotoxin level strictly limited under 5 EU/mg, fully complying with international laboratory biological reagent standards.
In physical properties, IGF-1 LR3 lyophilized powder dissolves rapidly in sterile purified water and weak acid neutral buffer, forming transparent homogeneous solution without sediment or suspended substances. Each batch undergoes complete full-index inspection, including mass spectrum identification, purity detection, moisture test, heavy metal screening and microbial limit analysis. Complete COA test certificates, HPLC chromatograms and batch inspection records are provided with shipments for customer filing and verification.
Multiple packaging specifications are available, including small trial vials and industrial bulk foil bags, supporting customized labeling and flexible order volumes. Long-term stable storage requires sealed, dry, light-proof environment at -20°C to prevent molecular decomposition. With stable batch consistency, high purity and complete qualification documents, IGF-1 LR3 is a reliable high-standard recombinant peptide raw material for global research institutions and biochemical laboratories.
Company Introduction
We are a formal and professional manufacturer fully dedicated to the research, development, production and global supply of various peptide raw materials. Having concentrated on peptide manufacturing for years, we have constructed a complete industrial system integrating independent laboratory research, standardized synthesis workshops, full-process quality control and one-stop export service, supplying raw materials for cosmetic, biochemical and formulation enterprises across the globe.
Our factory operates in strict accordance with international industrial norms and standardized production specifications. We own dust-free purified production zones, automated peptide synthesis equipment and professional separation & purification facilities. Every manufacturing procedure, ranging from raw material selection, peptide chain synthesis, chromatographic purification, filtration to sealed packaging and constant-temperature storage, follows unified SOPs. Our product portfolio covers a full range of mainstream peptides such as GHK-Cu, various oligopeptides, small molecule bioactive peptides and custom tailor-made peptides, all maintaining consistent physical and chemical properties among different batches.
Quality assurance stands as our top core operating principle. We set up an independent, fully equipped quality inspection laboratory staffed with professional QC technicians. Each batch of finished peptides undergoes comprehensive item detection, including purity analysis, impurity content test, solubility verification, molecular identification and stability examination. We issue complete COA test reports for all shipments and strictly block unqualified goods from delivery to guarantee reliable raw material supply for our partners.
Besides stable mass production capacity, we also provide flexible customization services to satisfy customers’ unique formula demands. Supported by mature production technology, rigorous quality management and sincere business credibility, we have built long-term cooperative partnerships with clients from numerous countries and regions. We keep optimizing production flows to stabilize product quality and offer responsive pre-sales technical consultation and after-sales tracking service, earning consistent trust and favorable feedback in the global peptide raw material market.
Global Shipping Information
We provide reliable global shipping services covering most countries and regions worldwide to deliver peptide raw materials to every customer smoothly. Our logistics system cooperates with professional international freight forwarders to balance delivery speed and cost, offering stable and predictable transportation arrangements for all orders.
In terms of delivery time, we maintain strict control over the whole shipping cycle. Under normal customs clearance and transportation conditions, the general delivery period will not exceed 20 working days. For many mainstream destinations, the goods can arrive within 7 to 10 days after shipment. The actual transit time is subject to local customs inspection efficiency and regional logistics schedules, yet we consistently optimize transport routes to cut waiting time and shorten overall delivery progress.
As for shipping cost, the unified standard freight charge is 70 US dollars per shipment. This fixed fee covers basic international transportation expenses under regular order specifications, without hidden extra logistics surcharges in most cases. Our team will arrange shipment promptly once payment is confirmed and send tracking numbers to customers for real-time logistics tracking.
We attach great importance to delivery stability to avoid prolonged delays that may affect customers’ production and formulation plans. If any unexpected logistics issues emerge during transit, our after-sales team will actively follow up and communicate with logistics providers to resolve problems efficiently. Our standardized global shipping plan integrates affordable pricing and controllable transit time, bringing convenient and cost-effective logistics support for all global partners.
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