Questions tagged [organophosphorus-compounds]

For questions about the synthesis, properties, or reactivities of organic compounds containing phosphorus; or about reactions in which such compounds are used.

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9
votes
3answers
92k views

Why is DNA negatively charged and what makes it so?

What part in the strand contributes to the overall non neutral charge? DNA is not isolated in the body, so what keeps it stable while being charged? Why is it important for DNA to be charged?
10
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2answers
11k views

Why is ATP, but not ADP or AMP, a sole source of energy?

Why are three phosphate groups (such as in ATP) required for release of energy, but not two (ADP) or one (AMP) phosphates? How does breaking the phosphate bond release energy?
2
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0answers
308 views

Differences in Novichok agent mass spectra

As we have all heard, in 2018, a series of poisonings with a nerve agent alleged to be of the Novichok series was carried out on British soil. It is claimed that the agent used was A-234. However, a ...
8
votes
3answers
842 views

Does the synthesis of beta-keto phosphonates from esters have a name?

Consider the Horner–Wadsworth–Emmons reaction; one of its reactants is a phosphonate, usually stabilised by a β-carbonyl group which is then deprotonated in α position (figure 1). These ...
2
votes
1answer
130 views

Why is methyl parathion less toxic than ethyl parathion?

According to the PubChem pages on ethyl parathion and methyl parathion (pages 11 and 12 of the toxicity section, respectively), methyl parathion is significantly less toxic than ethyl parathion. The ...
-7
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1answer
2k views

Is Phosphate (PO4 3-) solube in water? [closed]

Josh~ Superphosphate is used instead of just phosphate because superphosphate is a compound whereas phosphate is an ion. This means that phosphate must attach itself with a cation in order to give a ...
6
votes
3answers
5k views

When are the terms diphosphate and pyrophosphate used?

On the Wikipedia article about pyrophosphate, it states that: The group (pyrophosphate) is also called diphosphate or dipolyphosphate. But for example, why is ADP apparently called adenosine ...
5
votes
2answers
7k views

What is the difference between a phosphoryl group and a phosphate group?

I am looking at covalent modification of enzymes and I found out that only one of these types is phosphorylation. But I do not understand what the difference between the a phosphate and a phosphoryl ...
4
votes
1answer
119 views

Why are isomers of parathion less active acetylcholinesterase inhibitors than paraoxon?

Parathion itself has been found to be a very weak inhibitor of acetylcholinesterase. It normally requires metabolic activation and the conversion into paraoxon in the body to actually start exhibiting ...
3
votes
2answers
183 views

Why is the nomenclature glucose 6-phosphate, not 6-phosphateglucose?

What exact nomenclature rule define the naming of glucose 6-phosphate?
-4
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1answer
6k views

What is the difference between metaphosphoric acid and phosphonic acid? [duplicate]

Are metaphosphoric acid and phosphonic acid the same? I have been told that they're same BUT the structures online are different. Metaphosphoric acid has formula: $\ce{(HPO3)_n}$ phosphonic acid ...