MOPS Free Acid (Morpholinopropanesulfonic acid)

MOPS Free Acid is a biological buffer (zwitterionic) designed by Good, et al., and typically referred to as Good's buffer useful in cell culture media formulations. Selection of biological buffer systems should include the following criteria: exclusion by biological membranes, low absorption between 240 and 700nm, chemically stable, and stable to temperature and concentration changes. Synonyms: 3-(4-Morpholino)propanesulfonic Acid, 3-(N-Morpholino)propanesulfonic Acid, 3-Morpholinopropanesulfonic Acid, MOPS, Morpholinopropanesulfonic Acid, CAS No: 1132-61-2, Molecular Formula: C7H15NO4S, Molecular Weight: 209.26, Appearance: Supplied as a white powder. Purity: >99.5%, Solubility (1M): Colorless, clear, complete, pH (1%): 3.6-4.4, pKa: 7.1-7.2, Water (KF): <1%, Melting Point: 277-281°C, Absorbance (A260, 1M H2O): As Reported , Absorbance (A280, 1M H2O): As Reported , DNase: None Detected, RNase: None Detected, Protease: None Detected, Storage: RT