Reagentes Sintéticos

<p>Applications Sumanirole is a high affinity D2 receptor agonist (EC50 values are between 17 and 75 nM in cell-based assays). Sumanirole displays &gt;200-fold selectivity for the D2 receptor against other dopamine receptor subtypes (Ki values are 9.0, 1940, &gt;2190 and &gt;7140 for D2, D3, D4 and D1 receptors respectively). Sumanirole exhibits antiParkinsonian activity similar to Ropinirole (R641000).<br>References McCall, et al.: J. Pharmacol. Exp. Ther., 314 1248 (2005), Stephenson, et al.: J. Pharmacol. Exp. Ther., 314 1257 (2005),<br></p>

<p>Applications Gabexate Mesylate is a serine protease inhibitor. Gabexate Mesylate inhibits trypsin, plasmin, plasma kallikrein and thrombin. Gabexate Mesylate inhibits lipopolysaccharide-induced tumor necrosis factor-α (TNF-α) production through nuclear factor-κB and activator protein-1 activation. Neuroresearch &amp; Neuroprotective Product.<br>References Yuksel, M. et al.: J. Pharmacol. Exp. Therap., 305, 298 (2003); Tamura, Y. et al.: Biochim. Biophys. Acta, 484, 417 (1977); Ohno, H. et al.: Thromb. Res., 24, 445 (1981);<br></p>

<p>Applications 2-amino-3-methylpentan-1-ol (cas# 24629-25-2) is a useful research chemical.<br></p>

<p>Applications Intermediate in the production of mutagenic pyrolyzates.<br>References Grassy, G., et al.: Eur. J. Med. Chem., 17, 109 (1982),<br></p>

<p>Applications Epacadostat is a potent and novel indoleamine 2,3-dioxygenase (IDO1) inhibitor with IC50 of 10 nM. It has high selectivity over IDO2 and tryptophan 2,3-dioxygenase (TDO).<br>References Yue, Eddy W., et al.: ACS Med. Chem. Lett., 8, 486 (2017);<br></p>

<p>Applications Dacomitinib is an Erb-inhibitor, or an inhibitor of the members of the epidermal growth factor receptor family. Used as an ant-cancer agent due to observation of over-expressed epidermal growth factor receptor in nearly all cases of squamous cell carcinoma in the head and neck.<br>References Williams, J. et al.: PLoS., 9, e98557 (2014); Peters, S. et al.: Canc. Treatment Rev., 40, 917 (2014);<br></p>

<p>Applications KP372-1 is a specific Akt inhibitor that demonstrates at least 10-fold selectivity against a panel of additional kinase targets, including CDK1, ERK1, GSK3β, LCK, MEK1, PKA, PKC, and S6K. By blocking Akt signaling, KP372-1 has been shown to inhibit proliferation and to induce apoptosis of thyroid cancer cells.<br>References Zeng, Z., et al.: Cancer Res, 66, 3737-3746 (2006); Mandal, M., et al.: Br. J. Cancer, BJC, 92, 1899-1905 (2005)<br></p>

<p>Applications (+)-Dihydroquinidine (cas# 1435-55-8) is a useful research chemical.<br></p>

<p>Applications The R enantiomer of binaphthol derivative as chiral quenching agent.<br>References Strambini, G., et al.: Biochemistry, 29, 196 (1990), Gabellieri, E., et al.: Eur. J. Biochem., 221, 77 (1994), Cioni, P., et al.: Biophys. J., 86, 1149 (2004), Veldhuis, G., et al.: J. Biol. Chem., 280, 35148 (2005),<br></p>

<p>Applications Methyl 4-(Chloroformyl)butyrate is used in the synthesis of Leukotriene B4, a proinflammatory agent produced from leukocytes.<br>References Crooks, S. et al.: Int. J. Biochem. Cell. Biol., 30, 173 (1998); Wenkert, E. et al.: J. Org. Chem., 55, 6203 (1990);<br></p>

<p>Applications D-(-)-Diisopropyl Tartrate is a reagent for kinetic resolution of racemic allylic alcohols and α-furfuryl amides by enantioselective epoxidation.<br>References Lee, E., et al.: J. Org. Chem., 1994, 59 1444; Jung, M., et al.: J. Am. Chem. Soc., 115, 12208 (1993); Wang, Z., et al.: Tetrahedron, 49, 2641 (1993)<br></p>

<p>Applications Ethyl (2R,4S)-4-Methylpipecolate is an intermediate in the preparation of Argatroban (A769000).<br>References Hilpert, K. et al.: J. Med. Chem., 37, 3889 (1994), Kim, K. et al.: Med. Chem. Res., 6, 377 (1996),<br></p>

<p>Applications N-Carbobenzyloxy-D-serine-beta-lactone (cas# 98632-91-8) is a useful research chemical.<br></p>

<p>Applications A reagent used in the synthesis of glycidol, a stabilizer in manufacturing of vinyl polymers; intermediate in synthesis of glycerol, glycidyl ethers, and amines; additive for oil and synthetic hydraulic fluids; epoxy resin diluent.<br>References Palomo, J.M. et al.: Tetrahedron Asymm., 16, 869 (2005); Hiles, R.A., et al.: Food Cosmet. Toxicol., 19, 347 (1981); Thompson, E.D., et al.: Food Chem. Toxicol., 22, 665 (1984);<br></p>

<p>Stability Light Sensitive<br>Applications Enprostil is a synthetic analogue of prostaglandin E2 and was found to be effective in the treatment of patients with duodenal or gastric ulcers.<br>References Goa, K.L., et al.: Drugs., 34, 539 (1987); Higuchi, K., et al.: Inflammopharmacol., 15, 18 (2006); Murata, H., et al.: Hepato-Gastroenterol., 52, 1925 (2005);<br></p>

<p>Applications MDL 29951 is an allosteric inhibitor of the enzyme fructose 1,6-bisphosphatase.<br>References Wright, S., et. al.: Bioorg. Med. Chem. Lett., 13, 2055 (2003)<br></p>

<p>Applications Tideglusib is used in the treatment of brain atrophy, and movement disorder issues.<br>References Hoeglinger, G. et al.: Movement DIs., 29, 579 (2014); Tolosa, E. et al.: Movement Dis., 29, 570 (2014);<br></p>

<p>Applications (S)-(-)-2-Chloropropionic Acid (cas# 29617-66-1) is a compound useful in organic synthesis.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br></p>

<p>Applications 2,3-Dichloropyrazine is a substrate used for an efficient synthesis of aloisine (A575450), a potent cyclin-dependent kinase.<br>References Chekmarev, D.S., et al.: Tetrahedron., 62, 9919 (2006);<br></p>

<p>Applications Nickel boride, (cas# 12007-01-1) is a useful research chemical.<br></p>

<p>Stability Hygroscopic<br>Applications 5-Amino-6-nitroquinoline is a reagent used in the synthesis of benzodiazepine sulfonamide-based bombesin receptor 3 agonists. It is also used in the synthesis of quinoxalinediones.<br>References Liu, P. et al.: ACS. Med. Chem. Lett., 2, 933 (2011); Bigge, C. et al.: J. Med. Chem., 38, 5720 (1995);<br></p>

<p>Applications 3-Amino-2-Naphthol (cas# 5417-63-0) is a useful research chemical.<br></p>

<p>Stability Very Hygroscopic<br>Applications Labelled Plerixafor, it is a hematopoietic stem cell (HSC) mobilizer that inhibits the CXCR4 chemokine receptor and blocks binding of its ligand, stromal cell-derived factor-1-α (SDF-1-α). This agent was approved on Dec. 15, 2008, as treatment in combination with granulocyte-colony stimulating factor (G-CSF) to mobilize HSCs to the peripheral blood for collection and subsequent autologous transplantation in patients with non-Hodgkin's lymphoma (NHL) and multiple myeloma (MM).<br>References Xie, T., et al.: Science, 290, 328 (2000), Leone, D., et al.: J. Pharmacol. Exp. Ther., 305, 1150 (2003), Chigaev, A., et al.: J. Immunol. 178, 6828 (2007), Kiel, M., et al.: Cell Stem Cell, 1, 204 (2007),<br></p>

<p>Applications Tributylhexadecylphosphonium Bromide (CAS# 14937-45-2) is a dynamic compound used as a surface modifier for thermal properties of palygorskite, an additive in water to improve resistance of epoxy-anhydride matrices, and as a modifier of phenolic resin to improve thermal degradation.<br>References Cisneros-Rosado, D. E.; et al.: Polym. Compos., 39, E1531 (2018).; Capiel, G.; et al.: Polym. Adv. Technol., 28, 886 (2017); Asaro, L.; J. Therm. Anal. Calorim., 128, 1463 (2017).<br></p>

<p>Applications (R)-(-)-3-Hydroxypyrrolidine is a chiral hydroxy derivative of pyrrlodine used in the preparation of chiral niologically active compounds such as muscarinic receptor antagonists and antimicrobial agents.<br>References Sanchez, J. et al.: J. Med Chem., 35, 1764 (1992); Gao, J. et al.: Qilu Yao., 31, 68 (2012):<br></p>

<p>Applications Phenyl Chlorothionoformate is used in the preparation of an bicyclic thymidine analogs as selective inhibitors of Thymidine monophosphate kinase Mycobacterium tuberculosis (TMPKmt).<br>References Vanheusden, V. et al.: J. Med. Chem., 47, 6187 (2004);<br></p>

<p>Applications (1R,2S)-(-)-2-Amino-1,2-diphenylethanol is a hydroxylated 1,2-diphenethylamine derivative with affinity for the NMDA receptor.<br>References Berger, M.L. et al.: Bioorg. Med. Chem., 17, 3456 (2009);<br></p>

<p>Applications (S)-1,1-Diphenylprolinol is a useful catalyst for the preparation of flavonoids.<br>References Hu, J., et al.: Chem. Commun. (Cambridge, UK), 56, 10018 (2020)<br></p>

<p>Applications Dimethyl Acetylenedicarboxylate is a biocide that is added to biodiesels to inhibit and remove microbial growth. It can rapidly penetrate the skin and cause aberrations in the activities of the glycogenic, lipogenic, and tricarboxylic acid metabollic pathways. It also causes delayed and pain-free dermal burns.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Poon, R., et al.: Arch. Toxicol., 85(11), 1419-1427 (2011); Klain, George J., et al.: Fund. Appl. Toxicol., 10(4), 730-5 (1988); Slovak, A. J. M., et al.: Contact Dermatitis, 11(1), 29-30 (1984)<br></p>

<p>Applications Silver benzoate is an aromatic salt that is used as a catalyst to prepare β-amino acids (such as N-Acetyl-β-alanine [A168070]) from α-amino acids (such as D-Alanine [A480995]). Silver benzoate is also used as a catalyst in Wolff rearrangement reactions.<br>References Barnes, R. &amp; Prochaska, R.: J. Am. Chem. Soc., 72, 3188 (1950); Ogilvie, W., et al.: Bioorg. Med. Chem., 7, 1521 (1999); Podlech, J. &amp; Seebach, D.: Lieb. Ann., 1995, 1217 (1995)<br></p>

<p>Applications trans-2,5-Dimethylpiperazine is a C-alkyl substituted piperazine used in the preparation of opioid receptor ligands as well as other biologically active compounds.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Janetka, J.W. et al.: J. Org, Chem., 68, 3976 (2003);<br></p>

<p>Applications 1-Chloro-3-methyl-2-butene is a reactive allylic chloride that is used as an alkylating agent in synthetic chemistry. 1-Chloro-3-methyl-2-butene is also used as a reagent to synthesize Hyperforin, an antibiotic originating from St. John’s wort that has the ability to inhibit growth of tumour cells.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Hatch, L. &amp; Gerhardt, L.: J. Am. Chem. Soc., 71, 1679 (1949); Lee, M., et al.: Org. Lett., 6, 1241 (2004); Reitsema, R. &amp; Hunter, J.: J. Am. Chem. Soc., 71, 1680 (1949); Schempp, C., et al.: Oncogene, 21, 1242 (2002); Sparling, B., et al.: J. Am. Chem. Soc., 135, 644 (2013)<br></p>

<p>Applications 1,2-Diformylhydrazine as a bidentate ligand forms 1:1 metal to ligand complexes with transition metals Mn, Zn and Ni. It combines with iron (II) and iron(III) in alkaline conditions to a complex of an intense red-purple color making it a useful reagent in spectrophotometric analysis of iron(II) and iron(III). It was observed that mice were more likely to develop lung tumor when administered 1,2-Diformylhydrazine as a 2% solution.<br>References Nagabhushana, B., et al.: Anal. Bioanal. Chem., 373, 299 (2002); Bhargavi, G., et al.: P. Indian As-chem. Sci., 115, 23 (2003); Toth, B., Z. Krebsforsch. Klin. O., 92, 11 (1978);<br></p>

<p>Applications Guanadine thiocyanate is a strong protein denaturant. It is used as a chaotropic agent for the isolation of intact RNA during the process of cell lysis. It shows strong irreversible inhibition on enveloped viruses. It is a key chemical used to isolate the virus’ genetic material, or RNA so that it can be tested.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br></p>

<p>Applications Intermediate for the synthesis of enantiopure substituted 1,4-Dioxanes. Extremely valuable and versatile alcohol used as a chiral building block in organic synthesis.<br>References Bagnoli, L., et al.: Chem. Eur. J., 17, 993 (2011)<br></p>

<p>Applications Protected Glycidol, used as an intermediate in the preparation of neurochemicals.<br>References Wang, J., et al.: J. Med. Chem., 48, 6271 (2005), Qian, L., et al.: ChemMedChem, 1, 376 (2006), Li, Y., et al.: Bioorg. Med. Chem. Lett., 19, 5037 (2009),<br></p>

<p>Applications VU0357017 is a subtype-selective M1 muscarinic acetylcholine allosteric agonist. VU0357017 has a potency of 200 nM and Achmax of 81% and had no activity at M2-M5 up to the highest concentrations tested and also had little or no detectable antagonist activity at any other mAChR subtype at concentrations over 2 orders of magnitude higher than those required to activate M1 or activity at a large panel of GPCRs, ion channels, and transporters. In contrast, TBPB inhibited responses to ACh at each of the other mAChR subtypes. VU0357017 was active in reversing cognitive deficits induced by Scopolamine (S200000) in a preclinical rodent model.<br>References Bridges, et al.: Bioorg. Med. Chem. Lett., 20, 1972 (2010); Lebois, et al.: ACS Chem. Neurosci., 1, 104 (2010),<br></p>

<p>Applications Benzyl Isocyanate is a general reagent used in the synthesis of complex bisindolylmethanes. Also used in the preparation of urea derivatives of thiazol-2-ethylamines for their anti-trypanosomal activity.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Patrick, D. et al.: Bioorg. Med. Chem., 24, 2451 (2016);<br></p>

<p>Applications Tetrabutylammonium tetrafluoroborate (cas# 429-42-5) is a useful research chemical.<br></p>

<p>Applications 2,4,5-Trifluorobenzaldehyde is a reactant in the enantioselective synthesis of (R)-selegiline, an anti-Parkinson's drug, (S)-benzphetamine, an anti-obesity agent, and (S)-sitagliptin, an anti-diabetic drug.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Dey, S., Sudalai, A.: Tetrahedron-Asymmetr., 26, 67 (2015)<br></p>

<p>Applications 2,2,6,6-Tetramethylpiperidine is used in the syntheses of HMP-Y1, Hibarimicinone and HMP-P1, tyrosine kinase inhibitors.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Liau, B. et al.: J. Am. Chem. Soc., 134, 16765 (2012); Tatsuta, K. et al.: Tetrahedron Lett., 53, 422 (2012);<br></p>

<p>Applications Niobium Pentachloride is a reagent used in the synthesis of mixed chloro-aryloxide compounds and dyes.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Ilin, A. et al.: J. Alloy. Comp., 748, 543 (2018); Yuan, L. et al.: Inorg. Chem., 57, 4226 (2018);<br></p>

<p>Applications WAY-100635 Maleate Salt is a selective SR-2B antagonist. It can be used in biological study of drug effects viewed from a signal transduction network perspective.<br>References Fliri, A., et al.: J Med Chem, 52, 8038 (2009)<br></p>

<p>Applications Magnesium tert-Butoxide is a reagent used in deprotonation reactions in organic synthesis. A mild alkaline earth metal alkoxide base that also functions as a Lewis acid and Bronsted base in chemical transformations.<br>References Ponikiewski, L., et al.: Z. Anorg. Allg. Chem., 634, 1770 (2008); Roman, D. S., et al.: e-EROS Encyclopedia of Reagents for Organic Synthesis, 1 (2013)<br></p>

<p>Applications Used in the preparation of antibacterial oxazolidinones.<br>References Kim, J. et al.: 19, 550 (2009); Michael R. et al.: J. Med. Chem., 50, 5886 (2007)<br></p>

<p>Applications Tetrabutylammonium Hydroxide is used in biological studies for the detection of counter-anion effect on antimicrobial activity of tetrabutylammonium salts.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Ingalsbe, M.L., et al.: Bioorg. Med. Chem., 19, 4984 (2009)<br></p>

<p>Applications Protected Propargyl. A possible genotoxic compound that can affect the bacterial and mammalian cell systems.<br>References Glowienke, S. et al., Mutat. Res. Genet. Tox., 581, 23 (2005)<br></p>

<p>Applications 4-Chloro-7-methoxy-2-methylquinoline (cas# 75896-68-3) is a useful reagent for preparing multi-substituted 4-anilinoquin(az)olines that have antiviral activity.<br>References Saul, S., et al.: Bioorg. Med. Chem. Lett., 30, 127284 (2020)<br></p>

<p>Applications LY2157299 is a TGF-β type I receptor kinase inhibitor. LY2157299 has been used to inhance chemotherapy action against triple negative breast cancer (TNBC).<br>References Bhola, N.E., et. al.: J. Clin. Invest., 123, 1348 (2013)<br></p>

<p>Applications 3,4-Difluoro-benzoic Acid is a useful synthetic intermediate. It is used to synthesize 2-arylbenzimidazole derivatives as melanin-concentrating hormone receptor 1 (MCH-R1) antagonists.<br>References Lim, C., et al.: Bioorgan. Med. Chem. Lett., 21, 2309 (2011);<br></p>

<p>Applications 5-METHYLPYRROLIDIN-3-OL (cas# 94134-94-8) is a useful research chemical.<br></p>

<p>Applications 1-Methyl-D-tryptophan is used in biological studies to determine the effect of IDO2 enzyme (indoleamine-(2,3)-dioxygenase) activity and IDO2-mediated arrest of human T cell proliferation. It reverses IDO-mediated immune suppression<br>References Qian, F., et al.: Cancer Immunology Immunothrapy, 61, 2013 (2012)<br></p>

<p>Applications (4-Dimethylaminophenyl)di-tert-butylphosphine (cas# 932710-63-9) is a useful research chemical.<br></p>

<p>Applications Galeterone is an androgen receptor antagonist and CYP17A1 enzyme inhibitor.<br>References Soifer, H.S., et al.: J. Biol. Chem., 287, 3777 (2012); Vasaitis, T., et al.: Molec. Cancer. Therap., 7, 2348 (2008);<br></p>

<p>Applications 3-Cyanobenzoic Acid, is a building block used for the synthesis of a variety of 3,5-disubstituted 1,2,4-oxadiazoles from carboxylic acids, that can be used for the synthesis of a metabotropic glutamate subtype 5 (mGlu5) receptor antagonist.<br>References Ramu, T., et al.: Chem. Lett., 42, 722 (2013);<br></p>

<p>Applications Arimoclomol is a orally administered drug used to treat amyotrophic lateral sclerosis and was later discovered to be a potential insulin resistance treatment and diabetic complications.<br>References Kurthy, M., et al.: New. York. Acad. Sci., 967, 482 (2002); Kalmar, B., et al.: Exp. Neurol., 184, 636 (2003);<br></p>

<p>Applications 2,3-Pyrazinedicarboxylic Acid has been found to exhibit antifungal and antibacterial acitivity. It has also been used as a reagent in the preparation of transition metal pyrazinedicarboxylate complexes.<br>References Beaula, T.J., et al.: Spectrochim. Acta A, 138, 723 (2015); Premkumar, T., et al.: World J. Microb. Biot., 21, 479 (2005); Gunay, G., et al.: Inorg. Chim. Acta, 399, 19 (2013)<br></p>

<p>Applications Mirin is an MRN-ATM pathway inhibitor blocking 3’ and 5’ exonuclease activity associated with Mre11, inducing G2 cell cycle arrest.<br>References Shibata, A. et al.: Mol Cell., 53, 7 (2014);<br></p>

<p>Applications A Nicotinic acid (N429250) analogue used as a growth factor in Erwinia amylovora growth (pear and apple blossoms).<br>References Davis, A., et al.: Planta, 205, 305 (1998), Valls, F., et al.: J. Agric. Food Chem., 48, 3392 (2000), Gardener, M., et al.: J. Chem. Ecol., 2001, 27, 2545 (2001),<br></p>

<p>Applications (S)-(−)-α,4-Dimethylbenzylamine was used in the study of heterogeneous Raney nickel and cobalt catalysts for racemization and dynamic kinetic resolution of amines.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Parvulescu, A., et al.: Adv. Synth. Catal., 350, 113 (2008);<br></p>

<p>Stability Volatile<br>Applications 2-Furfurylamine is used in the synthesis of 2-Amino-N-(2-furylmethyl)propanamide, as a novel alanylglycine equivalent synthesized by bacilysin synthetase.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Mah, R., et al.: Appl. Microbiol., 15, 866 (1967), Faber, K., et al.: Pure Appl. Chem., 69, 1613 (1997), Marahiel, M., et al.: Chem. Biol. 4, 561 (1997),<br></p>

<p>Applications Iodoethane, is used in a variety of organic chemical reactions including the synthesis if disubstituted α-amino acids through alkylation reaction. Also used in electrochemical reduction reactions in the preparation of carbamates.<br>References Feroci, M. et al.: J. Org. Chem., 72, 200 (2007); Xu, P. et al.: J. Org. Chem., 71, 4364 (2006);<br></p>

<p>Applications Sodium Carbonate, has wide rang of applications. It can be used as a food additive acting as an acidity regulator, anti-caking agent, raising agent, and stabilizer. It is also used widely in the manufacture of glass. Sodium carbonate is also used as a relatively strong base in various settings.<br>References Karaca, H. et al.: Int. J. Food Microbio., 58, 1230 (2014); Merten, G. et al.: J. Am. Med. Addoc., 291, 2328 (2004); Robey, I. et al.: Canc. Res., 69, 2260 (2009);<br></p>

<p>Applications BIX02188 MEK inhibitor, prevents cell proliferation and induces apoptosis. Can be applied towards treatments of cancers and proliferative cell diseases.<br>References Tatake, R. et al.: Biochem. Biophys. Res. Comm., 377, 120 (2008);<br></p>

<p>Applications IWP-2 is an inactivator of Porcn function; inhibitor of Wnt production. IWP-2 is useful in the treatment diseases and conditions such as cancer, degenerative diseases, type II diabetes and osteopetrosis.<br>References Poss, K., et al.: Dev. Biol., 222, 347 (2000), Tanaka, K., et al.: Eur. J. Biochem., 267, 4300 (2000), Clevers, H., et al.: Cell, 2006, 127, 469 (2006),<br></p>

<p>Applications: mono-Methyl Terephthalate is used in the synthesis of Hepatits C antiviral activity. Also used in the design and preparation of benzamide derivatives as BRAFV600E inhibitors, which if mutated, can influence malignancies and melanomas.<br>References Shi, J. et al.: ChemMedChem., 8, 722 (2013); Xie, Y. et al.: Bioorg. Med. Chem. Lett., 23, 1396<br></p>