Batch‑specific COA (Certificate of Analysis), MS Spectrum, and MSDS supplied
Storage & Shipping
Shipped with cold‑pack protection; Store long‑term at -20°C in dry conditions
Chemicals & Intermediates
‑ CAS Number & Synonyms ‑ Molecular Formula & MW ‑ Assay / Chemical Purity（≥99.0% GC/HPLC） ‑ Grade & Application：R&D Grade, Pharma Grade, Synthesis Grade ‑ Appearance & Solubility ‑ Key Impurities Control：Moisture, Heavy metals ‑ Scale Availability：Grams / Multi‑kg / Ton‑level bulk
Steroids & Hormones
‑ CAS Number / Standard（USP / EP / BP） ‑ Micronization / Particle Size ‑ Melting Point & Optical Rotation ‑ Assay (Loss on Drying) ‑ Formulation Compatibility ‑ Packaging & Discretion
STRICT QUALITY CONTROL & ANALYTICAL TESTING
100% Batch‑Verified Purity, Structural Integrity, and Compliance Documentation
HPLC & LC‑MS Dual Verification
Every single batch of our peptides and chemical intermediates undergoes rigorous HPLC (High‑Performance Liquid Chromatography) to verify purity levels (up to 99%+) and LC‑MS (Mass Spectrometry) to confirm exact molecular mass and sequence identity.
Impurity & Endotoxin Control
We strictly monitor synthesis by‑products, residual organic solvents, heavy metals, and bacterial endotoxins. Our specialized freeze‑drying (lyophilization) process ensures optimum product stability, long shelf‑life, and zero interaction with reagents.
Transparent Batch COA & Documentation
We provide full analytical transparency. Every shipment includes a batch‑specific Certificate of Analysis (COA), MSDS, and original HPLC/MS test spectrums. What you see in the test report is exactly what arrives at your laboratory.
Independent Testing & Full Traceability
We welcome third‑party lab verification (including independent CRO and ISO‑certified lab testing). Every product vial is assigned a unique batch number, enabling complete raw material and production traceability from synthesis to delivery.
FAQs
How do I select the right peptide purity for my project?
Purity requirements depend on your application. For non‑sensitive preliminary screening or antibody generation, >85% purity is usually sufficient. For quantitative in vitro assays, receptor‑binding studies, and cell culture, we recommend ≥95% purity. For bio‑critical drug discovery, structural studies, and in vivo preclinical research, ≥98%–99% purity is highly recommended to eliminate unexpected impurity effects.
What quality assurance documentation is provided with peptide orders?
Every peptide shipment from Rchemsell includes a batch‑specific Certificate of Analysis (COA), High‑Performance Liquid Chromatography (HPLC) test spectrum, and Mass Spectrometry (MS) profile. These documents verify exact sequence identity, theoretical molecular weight, and purity levels.
How are lyophilized peptides packaged and shipped to ensure stability during transit?
Our peptides are freeze‑dried into stable lyophilized powder and sealed in sterile, vacuum‑sealed glass vials. Lyophilized peptides remain highly stable at room temperature during international air shipping (usually 3–7 days). Upon receipt, we recommend storing them at -20°C for long‑term bioactivity preservation.
Can Rchemsell handle custom sequence synthesis and complex peptide modifications?
Yes. Powered by advanced Solid‑Phase Peptide Synthesis (SPPS) platforms, we offer flexible custom peptide synthesis ranging from milligram samples to multi‑kilogram bulk batches. We support complex modifications including N‑terminal acylation, C‑terminal amidation, biotinylation, fluorescent labeling, PEGylation, and disulfide bond cyclization.
What are your payment terms and international customs delivery guarantees?
We support various secure payment options for global institutions and business clients. We utilize mature international logistics channels tailored for chemical and biopharmaceutical products, offering discrete packaging and robust customs clearance protocols to ensure safe delivery to North America, Europe, and Asia‑Pacific.
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