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Research guides
Plain answers on verification, certificates of analysis, compound identity and laboratory handling. Research use only.
How to Read a Peptide Certificate of Analysis (COA)
What a peptide COA should show: lot number, independent lab, LC-MS identity, HPLC purity, net peptide content and testing scope, plus the red flags to check.
How to Verify Research Peptides Before and After You Buy
How to verify research peptides: lot-matched COAs, independent labs, observed mass, net content, testing scope and NFC verification on the vial.
TB-500 vs Thymosin Beta-4: One Name, Two Molecules
TB-500 names two molecules: a 7-residue fragment (about 888.5 g/mol) and full-length thymosin beta-4 (about 4,963 g/mol). How to tell which one you have.
BPC-157 vs TB-500: Compound Comparison for Researchers
BPC-157 vs TB-500 compared by identity: sequence, length, molecular weight, CAS number, handling, and the model systems in the published literature.
Lyophilized Peptide Storage: Temperature, Light and Freeze-Thaw
Storing research peptides: lyophilized powder at -20 °C away from light, ambient in transit, solutions at 2 to 8 °C, and why freeze-thaw cycles are avoided.
Bacteriostatic Water vs Sterile Water for Laboratory Research
Bacteriostatic vs sterile water as lab diluents: what benzyl alcohol does and does not do, and why it is the wrong choice for cell-based assays.