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In biochemistry, phenylmethylsulfonyl fluoride (PMSF) is a serine protease inhibitor (serine hydrolase inactivator) commonly used in the preparation of cell lysates. PMSF does not inactivate all serine proteases. The effective concentration of PMSF is between 0.1 - 1 mM. The half-life is short in aqueous solutions (110 min at pH 7, 55 min at pH 7.5, and 35 min at pH 8, all at 25 °C). Stock solutions are usually made up in anhydrous ethanol, isopropanol, or corn oil and diluted immediately before use. C6H5CH2SO2F F.W. 174.20 - CAS #329-98-6 | |
25 / 100g Used for negative staining. m.p. 387°C formula CdI2 F.W. 366.21 CAS #7790-80-9 Assay min. 99.0% | |
calcium chloride CaCl2·2H2O F.W. 147.02 CAS #10035-04-8 Storage : RT Unit : 100g d | |
A mixture consisting of 1% phosphotungstic acid (PTA) in 10% chromic acid (CrO3) selectively stains the plasma membrane of plant cells. Unit : 100g e | |
citric acid anhydrous ACS Unit : 500g d | |
Used as an activator for the Vestopal embedding resin in solution d
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making film support grids
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collodion 5% in solution : 25% Alcohol, 75% Diethyl Ether d | |
Dextrose, Anhydrous, ACS Reagent Composition: Glucose 100% Grade: Anhydrous, ACS Reagent Unit : 500g a |