Morphiceptin is a potent and specific agonist for morphine (μ) receptors. Morphiceptin, as a synthetic peptide, is the amide of a fragment of the milk protein β-casein. Morphiceptin has morphinelike activities and is highly specific for morphine (μ) receptors but not for enkephalin receptors.

Reference standards.

Gap19 TFA is a peptide derived from nine amino acids of Cx43 cytoplasmic ring (CL), an effective, selective connexin 43 (Cx43) half-channel blocker.