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Empirical Formula (Hill Notation): C7H15NO4S
Molecular Weight: 209.3
Cas Number: 001132-61-2
MOPS (3-(N-morpholino)propanesulfonic acid, 4-Morpholino Propanesulfonic Acid) is a buffer introduced by Good et al. in the 1960s. It is a structural analog to MES and it’s chemical structure contains a morpholine ring. With a pKa of 7.20, MOPS is an excellent buffer for many biological systems at near-neutral pH. MOPS has inert properties and is capable of buffering within a pH range of 6.5 – 7.9 in solutions. MOPS does not interact with any metal ions, and with it’s significant metal-buffer stability it is especially non-reactive with cobalt (Co), copper (Cu), manganese (Mn), nickel (Ni) and zinc (Zn).
MOPS is frequently used as a buffering agent in biology and biochemistry. It has been tested and recommended for polyacrylamide gel electrophoresis. Usage above a 20 mM concentration in mammalian cell culture work is not recommended.
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Type
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Description
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Specifications
Appearance
White crystalline powder
Assay (Titration, Dry Base)
≥99.0%
Water Content by KF
≤1%
Infrared
Complies
Solubility 1M water
Clear colourless solution
pH 1% Di H2O
3.6 – 4.4 (25°C)
A280, 1M water
≤0.10
A260, 1M water
≤0.15
Store dry at room temperature
Soluble in water
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Registered in England and Wales. Company No. 04351225. VAT No. GB 803727440
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