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0.22 m) immediately prior to use Aliquot and store reconstituted solutions at 20 C (or lower) Avoid repeated freezethaw cycles Specifications Summary Purity: Manufactured to specification Appearance: White to off-white lyophilised powder Peptide Type: Synthetic EPO-derived peptide analogue Molar Weight: 1257.3 g/mol Solubility: Water, buffered aqueous solutions Storage: 20 C, desiccated, protected from light Pack Size: 10 mg Precautions & Notes Experimental behaviour of ARA-290 is influenced by receptor expression, concentration, and model system Does not stimulate erythropoiesis in experimental settings Buffer composition and pH may affect peptide stability and assay performance Appropriate controls are recommended to distinguish receptor-specific from non-specific effects Intended strictly for laboratory research use

It appears that some small peptides (chains of 2 or 3 amino acids) can be absorbed without further reduction

doi:10.1128/aem.03417-12

Circulation 2000