research grade peptides FAQ

Lyophilised peptides tolerate brief temperature excursions better than reconstituted solutions, but 'brief' means under 48 hours below 30°C. If the package feels warm to the touch or sat in a delivery truck for multiple days in summer heat, the peptide's stability is compromised. Reconstitute a small test aliquot and observe for clarity. Degraded peptides often appear cloudy or form visible particulates. For critical research, discard the vial and request a replacement with insulated shipping. Real Peptides ships with thermal packaging during warm months and offers reshipment if temperature logging indicates excursion. Swiss Chems operated similarly. This is standard practice among research-grade suppliers, not a courtesy.

Reputable Swiss Chems alternative suppliers offer custom synthesis for non-catalog peptides, typically with a 4–6 week lead time and minimum order quantities starting at 100mg. Real Peptides provides custom sequencing for research teams working with novel analogs or modified peptides not available commercially. Pricing scales with sequence length and complexity. A 10-amino-acid peptide costs significantly less than a 40-amino-acid sequence. Request a purity target (98% or higher) and third-party verification in the synthesis agreement. Custom peptides should include the same COA documentation as catalog products.

Do not use the peptide. Contact the supplier immediately and request the correct batch-specific COA. A mismatched COA means either the vial was mislabeled or the supplier is recycling generic test results across multiple batches. Both scenarios indicate quality control failure. Legitimate Swiss Chems alternative suppliers like Real Peptides provide lot-matched COAs on request within 24 hours, and the batch number on your vial should appear in the COA header. If the supplier cannot provide a matching COA, request a refund and source elsewhere. Research integrity depends on knowing exactly what compound you're working with.