P chemical structure

Keeler], Wothers P. Chemical Structure and Reactivity An Integrated Approach. New York Oxford University Press 2008. 

Peng, P. Morales-Izquierdo, A. Lown, E.M. Strausz, O.P. Chemical structure and biomaiker content of Jinghan asphaltenes and kerogens. Energy Fueb 1999,13,248-265. 

Rizzi G. P. Chemical structure of colored Maillard reaction products. Food Reviews International, 13 1-28 (1997). 

For a review of different coding systems see, for example J.E. Ash, W.A. Warr, P. Willett, Chemical Structure Systems, Ellis Horwood, Chichester, UK, 1991. 

P. WiUett, Three-Dimensional Chemical Structure Handling, John Wiley Sons, New York, 1991. 

Downs G M, P Willett and W Fisanick 1994. Similarity Searching and Qustering of Chemical Structure Databases using Molecular Property Data, journal of Chemical Information and Computer Sciences 34 1094-1102. 

P. Willett, Three-Dimensional Chemical Structure Handling Research Studies Press, Baldock (1991). 

J. P. Hickey, A. Aldridge, D. R. May Passino, A. M. Frank, Expert System Predicts Aquatic Toxicityfrom Contaminant Chemical Structure,NMoa-A Fisheries Research Center-Great Lakes, U.S. Fish and Wildlife Service, Ann Arbor, Mich., 1991 Ibid., Drug Information Journal 26, 487 (1992). 

StiJl, D. R., F. F. Westnim, Jr., and G. C. Sinke, The Chemical Thermodynamics of Organic Compounds, John Wiley and Sons, New York, 1969. Stuper, A. J., W. E. Brugger, and P. C. Jurs, Computer Assisted Studies of Chemical Structur e and Biological Function, John Wiley and Sons, New York, 1979. 

Oxidation of P-nicotinamide adenine dinucleotide (NADH) to NAD+ has attracted much interest from the viewpoint of its role in biosensors reactions. It has been reported that several quinone derivatives and polymerized redox dyes, such as phenoxazine and phenothiazine derivatives, possess catalytic activities for the oxidation of NADH and have been used for dehydrogenase biosensors development [1, 2]. Flavins (contain in chemical structure isoalloxazine ring) are the prosthetic groups responsible for NAD+/NADH conversion in the active sites of some dehydrogenase enzymes. Upon the electropolymerization of flavin derivatives, the effective catalysts of NAD+/NADH regeneration, which mimic the NADH-dehydrogenase activity, would be synthesized [3]. 

P Willett. Algorithms for the calculation of similarity m chemical structure databases. In MA Johnson, GM Maggiora, eds. Concepts and Applications of Molecular Similarity. New York Wiley, 1990, pp 43-63. 

Figure 1 Chemical structure and space-filling representation of a phosphatidylcholine, DPPC. Different parts of the molecule are referred to by the labels at the left together the choline and phosphate are referred to as the headgroup, which is zwitteriomc. In the space-filling model, H atoms are white, O and P gray, and C black. (From Ref. 55.)...

There are a number of other synthetic substances analogous with or approximating to the cinchona alkaloid structure which it is more convenient to deal with in discussing the correlation of chemical structure with pharmacological action in this group (p. 469). 

Chemical Name 1,1, 1 "-(1-chloro-1-ethenyl-2-ylidene)tris[4-methoxybenzene] Common Name Tri-p-anisylchloroethylene Structural Formula ... 

Chemical Name 4-butyl-1 -(4-hydroxyphenyl)-2-phenyl-3,5-pyrazolidinedione Common Name p-hydroxyphenylbutazone Structural Formula oh... 

The structure and formation of ATP. (A) The chemical structure of adenosine triphosphate (ATP). "C" indicates carbon, "N" nitrogen, "O" oxygen, "H" hydrogen and "P" phosphorus. Note the negative charges on the phosphate groups (PO3 ). (B) ATP can be formed from adenosine diphosphate (ADP). 

Alkylating agent, a reactive chemical that forms a covalent bond with chemical moieties on the biological target (usually a protein). For instance, p-haloalkylamines generate an aziridinium ion in aqueous base that inserts into -SH, -CHOH, or other chemical structures in peptides. Once inserted, the effects of the alkylating agent are irreversible. 

Ulitzer and Hastings, 1979 Riendeau and Meighen, 1980). The chemical structure of the autoinducer of P. (Vibrio) fischeri was determined by Eberhard et al. (1981) to be an acylhomoserine lactone (1), shown below. The autoinducer of Vibrio harveyi was found to be another acylhomoserine lactone (2) by Cao and Meighen (1989). 

Both PS-A and PS-B have a tendency to hydrate like panal, and they also form adducts with methylamine. The adducts, PS-A/MA and PS-B/MA, are prepared by incubating PS-A or PS-B in 75 % methanol containing an excess amount of methylamine hydrochloride plus some sodium acetate to neutralize the HC1, at 45°C for 30 min. The adducts can be purified by HPLC on a PRP-1 column (80% acetonitrile containing 0.05% acetic acid). Their chemical structures have been determined by NMR and mass spectrometry as shown in Fig. 9.8 (p. 288). Both adducts are colorless and show an absorption maximum at 218 nm. 

Anti metabolites. Figure 8 Chemical structure of Azacitidine (4-amino-1-p-D-ribofuranosyl-s-triazin-2 (1H)-one). 

J. H. Ridd, Studies on Chemical Structure and Reactivity, Methuen, London, 1966, p. 143. 

When wave mechanical calculations are made according to the Schrodinger equation, the probability of finding the electron in a node is zero, but this treatment ignores relativistic considerations. When such considerations are applied, Dirac has shown that nodes do have a very small electron density Powell, R.E. J. Chem. Educ., 1968,45,558. See also Ellison, F.O. and Hollingsworth, C.A. J. Chem. Educ., 1976, 53, 767 McKelvey, D.R. J. Chem. Educ., 1983, 60, 112 Nelson, P.G. J. Chem. Educ., 1990, 67, 643. For a review of relativistic effects on chemical structures in general, see Pyykko, P. Chem. Rev., 1988, 88, 563. 

Errera, J., Sherrill, M. L. (1929). Dipole moment and molecular constitution. In P. Debye (Ed.), Dipolmoment und Chemische Struktur [Dipole Moment and Chemical Structure], Leipzig Hirzel. 

Fig. 12. Chemical structure of the mesogenic 4-cyano-4 -n-pentyl-p-terphenyl (T15)...

X-IP is a compound with a chemical structure of (p-FC5H40)n-N3P3-(m-0C5H4CF3)5 , where m = 0,1,2. 

At the present, perfluoropolyether or PFPE, a random copolymer with a linear principal chain structure, has been widely used in HDD as the lubricant. Its chemical structure can be described by A-[(0CF2CF2)p-(0CF2)g]-0-A (p/q s2/3), with the average molecular weight ranging from 2,000 to 4,000 g/mol. Here, the symbol -X denotes the end-bead (eb), corresponding to -CF3 (nonfunctional) in PFPE... 

Hansch C, Fujita T. p-o-ix Analysis method for the correlation of biological activity and chemical structure. J Am Chem Soc 1964 86 1616-26. 

Willett P, Winterman V, Bawden, D. Implementation of nearest neighbour searching in an online chemical structure search system. J Chem Inf Comput Sci 1986 26 36-41. 

Raymond JW, Willett P. Maximum common subgraph isomorphism algorithms for the matching of chemical structures. J Comput-Aided Mol Des 2002 16 521-33. 

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