Novel compounds of formula (I), a process for their preparation, and their use as pharmaceutical agents are described: <CHEM> wherein R1 represents <CHEM> in which each of p and q independently represents an integer of 2 to 4, r represents an integer of 2 to 4, s represents 1 or 2...
a Schematic illustration of the proposed self-immolative polydisulfide as a tool to collect activating chemical signal in solution and propagate it to the sterically hindered active site of an enzyme; b Chemical formula of lipoic acid and schematic illustration of its reversible polymerization into a...
O 2 -Oxygen H 2 -Hydrogen Cl 2 -Chlorine Let’s Break it Down CO 2 = Carbon Dioxide H 2 0 = Water C 6 H 12 O 6 = Glucose O 2 = Oxygen Formula for Photosynthesis: 6CO 2 + 6H 2 0 + energy from sunlight C 6 H 12 O 6 + 6O 2 Chemical Equations A chemical equation is...
Acetylene forms highly unstable acetylides with many metals, including copper,brass, mercury, potassium, silver, and gold. The dry acetylides are sensitive,powerful explosives. Acetylene may react violently with fluorine and other halogens (chlorine, bromine, iodine) and forms explosive compounds on ...
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Slight variations in composition are needed for α—β and β—γ brasses to prevent differential attack. With β—γ alloys, a dull film forms and this can be removed by immersion in a saturated solution of chromic acid in fuming nitric acid for a few seconds followed by washing Water 20...
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Chemical formula C3H6N6 Appearance White crystal powder Molecular weight 126.12 Density 700-900kg/m3 Melting point(ºC) 354ºC Product Packing Our company SHANDONG SHING CHEMICAL CO., LTD. is a professional company engaged in Chemicals for 15 yea...
brass Messing, das (eng.) Brass is any alloy of copper and zinc, whereas bronze is an alloy of copper and tin. Because of its malleability, brass is often used to produce instruments. brazing Hartlöten, das (eng.) Brazing is a joining process where a filler metal or alloy is heated...
Vinegar is a naturally-occurring liquid that contains many chemicals, so you can't just write a simpleformulafor it. It is approximately 5-20% acetic acid in water. So, there are actually two main chemical formulas involved. Themolecular formulafor water is H2O. The structural formula for ac...