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In organic chemistry and biochemistry, the symbol R denotes a side chain. (The symbol in fact stands for radical.) This is useful when you wish to write a single formula to denote a number of different compounds with a certain structure in common.
Example
All the amino acids that are encoded by DNA have this component: -CH(NH2).CO2H
A convenient way to write the formula for all these amino acids is:
R-CH(NH2).CO2H
where
R = hydrogen (H-) in the amino acid glycine
R = a methyl group (CH3-) in alanine
and so on.
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What does the subscript r stand for in chemistry qr?
The subscript r in chemistry typically refers to a rate constant in a chemical reaction. It represents the rate at which a reaction occurs under specific conditions.
What is the difference between the R and S configurations in organic chemistry?
In organic chemistry, the R and S configurations are used to describe the spatial arrangement of atoms around a chiral center. The R configuration indicates a clockwise arrangement of substituents, while the S configuration indicates a counterclockwise arrangement.
What is the difference between the R and S configuration in organic chemistry?
In organic chemistry, the R and S configurations refer to the spatial arrangement of atoms around a chiral center. The R configuration indicates a clockwise arrangement of substituents, while the S configuration indicates a counterclockwise arrangement. This distinction helps to identify the stereochemistry of molecules.
In organic chemistry what does the r stand for example rh cl2 - rcl hcl?
r stands for "the rest of a molecule". Since there are about 20 different amino acids, it could be any one of the 20.
Who was the winner of noble prize in chemistry in 2005?
It is shared by Yves Chauvin, Robert H. Grubbs and Richard R. Schrock.
What has the author R A Witthaus written?
R. A. Witthaus has written: 'Essentials of chemistry' -- subject(s): Organic Chemistry, Chemistry, Pharmaceutical chemistry
What has the author William R Robinson written?
William R. Robinson has written: 'Chemistry' -- subject(s): Chemistry 'General chemistry with qualitative analysis' -- subject(s): Analytic Chemistry, Chemistry, Chemistry, Analytic, Qualitative
What has the author John R Amend written?
John R. Amend has written: 'General, organic, and biological chemistry' -- subject(s): Biochemistry, Chemistry, Chemistry, Organic, Organic Chemistry
What has the author R Nelson Smith written?
R. Nelson Smith has written: 'Chemistry; a quantitative approach' -- subject(s): Analytic Chemistry, Chemistry, Quantitative
What has the author R T Sanderson written?
R. T. Sanderson has written: 'Inorganic chemistry' -- subject(s): Inorganic Chemistry 'Teaching chemistry with models' 'Simple inorganic substances' -- subject(s): Inorganic Chemistry 'Fundamentals of modern chemistry' -- subject(s): Chemistry
What has the author R J W Cremlyn written?
R. J. W. Cremlyn has written: 'A college organic chemistry' -- subject(s): Chemistry, Organic, Organic Chemistry
What has the author Stephen R Byrn written?
Stephen R. Byrn has written: 'Solid state chemistry of drugs' -- subject(s): Pharmaceutical chemistry, Solid state chemistry
What does R-134A stand for?
In chemistry, this chemical compound, R-134A is the symbol for tetrafluoroethane. Tetrafluoroethane can be used as a solvent in organic chemistry.
What has the author Paul R Loconto written?
Paul R. Loconto has written: 'Trace environmental quantitative analysis' -- subject(s): Analytic Chemistry, Chemistry, Analytic, Environmental chemistry, Quantitative, Trace analysis
What has the author R A Day written?
R. A. Day has written: 'Quantitative analysis' -- subject(s): Analytic Chemistry, Analytical Chemistry, Laboratory manuals, Quantitative
What has the author S R Logan written?
S. R. Logan has written: 'Physical chemistry for the biomedical sciences' -- subject(s): Chemistry, Physical and theoretical, Physical and theoretical Chemistry 'Fundamentos de Cinetica Quimica'
What is R O R in chemistry?
R O R stands for an ether functional group in chemistry. It consists of an oxygen atom bonded to two alkyl or aryl groups. Ethers are commonly used as solvents in various chemical reactions.
