Halogénures organiques

Stability Light Sensitive
Applications An intermediate in the synthesis of Terbinafine (T107500).

Applications CHLOROFLUOROACETAMIDE (cas# 431-09-4) is a useful research chemical.

Applications N-Phenoxyisopropyl-N-benzylaziridinium Perchlorate is a useful intermediate in the synthesis of aziridinium ions and analogs that functions as α-adrenergic blockades.
References Henkel, J. G., et al.: J. Med. Chem., 19, 6 (1976)

Stability Moisture Sensitive
Applications A versatile phosphitylating agent for the phosphorylation of hydroxy amino acids and the preparation of protected phosphopeptides.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References Liskamp, R.M.J., et al.: Recl. Trav. Chim. Pays-Bas, 109, 27 (1990)

Applications 4-Chloropropiophenone is a useful synthetic intermediate. It can be used to prepare 4-Chloro Cathinone. It can also be used to synthesize bupropion (B689625) analogs.
References Carroll, F., et al.: J. Med. Chem., 52, 6768 (2009)

Applications Diethylamine Hydrochloride is a secondary amine and a precursor of Atrazine (A794600). It is used as a reactant if the production of pesticides, dyes and pharmaceutical compounds.
References Raghuram, P. et al.: Chromatograph., 71, 963 (2010); Smith, D. & Crowley, D.: FEMS Microbiol. Ecol., 58, 271 (2006); Asiri, A.: Dyes and Pigments., 42, 209 (1999); Rijhsinghani, K. et al.: Canc. Det. Prev., 5, 283 (1982)

Applications Reagent used in the preparation of carbonic anhydrase inhibitors.

Applications 1H,1H,2H,2H-Perfluorodecyltriethoxysilane is used in making thin film transistors, polyethersulfone membranes, and a superwettable Janus membrane.
References Zhu, Zhigao, et al.: J. of Membrane Sci., 563, 602-609 (2018); Khan, Aftab A., et al.: Separation and Purification Tech., 210, 20-28 (2019); Shih, Andy, et al.: MRS Adv., 3(33), 1877-1882 (2018)

Applications 3-(Trifluoromethyl)benzenepropanol (cas# 78573-45-2_x000D_) is a compound useful in organic synthesis.

Applications 1-(Bromomethyl)pyrene (cas# 2595-90-6) is a compound useful in organic synthesis.

Applications 2-Amino-6-fluorobenzothiazole is a useful research chemical. An intermediate for the synthesis of benzothiazoles and aminobenzothiazoles with antimicrobial activity.
References Defrenza, I., et al.: J. Heterocycl. Chem., 52, 1705 (2015); Catalano, A., et al.: Eur. J. Med. Chem., 64, 357 (2013)

Stability Moisture Sensitive
Applications 2-Ethylbutyl Chloroformate is a possible impurity from the synthesis of Dabigatran etexilate mesylate (D100150).
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References Zheng, Y., et al.: Org. Proc. Res. Devel., 18, 744 (2014)

Applications 2,7-Dibromo-9H-fluorene is a useful building block for organic synthesis.

Applications Dabsyl Chloride is used for HPLC amine derivatization to detect proteins and other molecules.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References Romero, R. et al.: Chromatograph., 51, 404 (2000); Ikeda, M. et al.: Amino Acids., 8, 401 (1995):

Applications 2-[2-(2,2,2-Trifluoroethoxy)phenoxy]-ethanol, is used in the preparation of hydroxy(aminomethyl)pyridine derivatives.
References Elworthy, T.R., et al.: J. Med. Chem., 40, 2674 (1997)

Applications 1-(2,3-Dimethylphenyl)ethyl Chloride is an impurity of Medetomidine (M203250), an α2-Adrenergic agonist. Sedative; analgesic.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References Scheinin, M., et al.: Br. J. Clin. Pharmacol., 24, 443 (1987), Stenberg, D., et al.: J. Vet. Pharmacol. Ther., 10, 319 (1987), Virtanen, R., et al.: Eur. J. Pharmacol., 150, 9 (1988), Cullen, L.K., et al.: Br. Vet. J., 152, 519 (1996),

Stability Air Sensitive
Applications 4,5-Dichloro-2-octyl-3(2H)-isothiazolone (cas# 64359-81-5) is a useful research chemical.

Applications Tetrabromophthalic Anhydride is a brominated flame retardant used as additives in plastics to decrease the rate of combustion of these materials, leading to greater consumer safety.
References El-Fouly, M., et al.: Environ. Toxicol. Chem., 13, 1581 (1994), Fowles, J., et al.: Toxicology , 86, 49 (1994),

Applications Nonanoyl Chloride is used in the synthesis of immunosuppressants involving 2-aminoethanols and aminopropane-1,2-diols. Also used in the synthesis of Vanilloids with antinociceptive and antiinflammatory compounds.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References Kiuchi, M. et al.: J. Med. Chem., 43, 2946 (2000); Janusz, J. et al.: J. Med. Chem., 36, 2595 (1993);

Applications 3-((2-Nitro-4-(trifluoromethyl)-phenyl)amino)propane-1,2-diol, (cas# 104333-00-8) is a useful research chemical.

Applications 2-Bromo-1,1'-biphenyl is used to synthesize ortho-twisted asymmetric anthracene derivatives for blue organic light emitting diodes (OLEDs). 2-Bromo-1,1'-biphenyl is also a useful synthetic intermediate. It can be used to prepare aryl sulfides via palladium-catalyzed coupling.
References Shin, M., et al.: Dyes. Pigments, 92, 1075 (2012); Park, N., et al.: J. Org. Chem., 76, 4371 (2011)

Applications Fluorinert FC 40 is a colorless, thermally stable, fully- fluorinated liquid. A useful modifier for the design of soft porous polymers.
References Turani-i-Belloto, A., et al.: Polymers (Basel, Switzerland), 12, 1008 (2020)

Applications Pentafluorobenzoic acid (cas# 602-94-8) is a useful research chemical.

Applications Ethyl 4-Bromo-2-(methoxyimino)-3-oxobutyrate is an intermediate used in the synthesis of some thiophene analogs as anti-inflammatory agents.
References Pillai, A., et al.: Bioorg. Med. Chem., 13, 1275 (2005)

Applications 1-Bromo-9-(tert-butyldimethylsilyloxy)nonane is used in the preparation of Fulvestrant (F862500) intermediate.
References Liu, W., et al.: Faming Zhuanli Shenqing (2014), CN 103965280 A 20140806

Applications Di-tert-butyldichlorosilane (cas# 18395-90-9) is a useful research chemical.

Applications Hydrochloride salt of 2-Dimethylaminoisopropyl Chloride, used in the synthesis of analogues of lipophilic chalcones, which act as antitubercular agents.
References Ahmad, I. et al.: Bioorg. Med. Chem. Lett., 23, 1322 (2013); Rhee, H. et al.: Bull. Kor. Chem. Soc., 32, 2391 (2011);

Applications 2-Bromodibenzofuran is a brominated derivative of Dibenzofuran (D417185); a reagent in Friedel-Crafts acylation.
References Albrecht, W. L., et al.: J. Med. Chem., 20, 364 (1977)

Applications 5-Chloro-1-Indanone is used as a reagent in the synthesis of novel tricyclic pyrazoles as CB1 and CB2 cannabinoid receptors. Also used in he synthesis of heteroarylmethylidene cubstituted compounds as selective inhibitors of aldosterone synthase.
References Ulmschneider, S. et al.: J. Med. Chem., 48, 1563 (2005); Ulmschneider, S. et al.: J. Med. Chem., 48, 1563 (2005);

Applications N-Iodoacetyltyramine is used in iodine-125 labelling of various molecules for chemical analysis.
References Lin, C. et al.: Anal. Biochem., 179, 389 (1989);

Applications 1-Bromohexane is a very useful synthetic intermediate for pharmaceuticals and organic chemicals. It can be used to react with Mg to prepare Grignard reagents which play an important role in formation of carbon-carbon bond.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References Tamura, M., et al.: Synth., 6, 303 (1971); Asami, M., et al.: Chem. Lett., 8, 1221 (1985); Akiba, K., et al.: Tetrahedr. Lett., 23, 3935 (1982)

Applications Butyltrimethylammonium Chloride is an antistatic agents that is used in surface application on polymers. Butyltrimethylammonium Chloride is also used as a co-pyrolisant in acetylcholine and choline pyrolysis gas chromatography.
References Vasilenok, Y.I. et al.: Vest. Akad. Nav. BSSR Ser. Khim. Nav., 5, 97 (1971); Vasilenok, Y.I. et al.: Dok. Akad. Nauk BSSR, 18, 1016 (1984): Khandelwal, J.K. et al.: Eur. J. Pharmacol., 76, 145 (1981);

Applications Bromothalonil can be used in biological study of comparison and validation of an in vitro skin sensitization strategy using a data set of 33 chemical references.Environmental toxin on US EPA Toxic Release Inventory list (TRI) list.
References Clouet, E., et al.: Toxicology In Vitro, (2017)

Applications 2-Chlorophenylboronic Acid used in the preparation of imidazo[1,2-a]pyridine amides which has tuberculostatic activity.
References Kang, S., et al.: J. Med. Chem., 57, 5293 (2014);

Applications 2-Amino-5-chlorobenzenesulfonic Acid can be used as reactant/reagent in determination of the dissociation constants of some newly synthesized arylhydrazones of indane-​1,​3-​dione.
References Mahmudov, K. T.: Azerbaidzhanskii Khimicheskii Zhurnal, 4, 92 (2011)

Applications 2,2,2-Trifluoroethyl Tosylate is a trifluoroethylation agent used in the preparation of 2,2,2-trifluoroethyl phenyl sulfone, a potential 2,2,2-trifluoroethyl pronucleophile.
References Zhang, W., et. al.: Tetrahedron Lett., 53, 6565 (2012)

Applications An intermediate in the manufacturing of Nylon.

Applications (((9H-Fluorene-9,9-diyl)bis(4,1-phenylene))bis(oxy))bis(ethane-2,1-diyl) diacrylate (CAS# 161182-73-6) is a photosensitive compound often found in film curing resins and solutions.
References Tanigaki, Y.; et al.: WO 2018181311 (2018).

Applications 2,4,6-Tribromoanisole is haloanisole often present in wine. 2,4,6-Tribromoanisole is one of the main agent responsible for the musty odor in wine sample
References Sanvicens, N. et al.: J. Agric. Food Chem., 54, 9176 (2006); Copete, M.L. et al.: Food Add. Contam. Part A Chem. Anal. Cont. Risk Assess., 26, 32 (209);

Applications 1-Bromo-5-chloropentane is a chemical reagent used in the synthesis of novel imidazole derivatives as heme-oxygenase (HO-1 and HO-2) inhibitors for use as cytotoxic agents against cancer cell lines.
References Salerno, L. et al.: Eur. J. Med. Chem., 96, 162 (2015);

Applications Ethyl 3-bromopropionate

Applications An antimalarial; antirheumatic; lupus erythematosus suppressant. It is a COVID19-related research product.
References Yarden, Y., et al.: Nature, 323, 226 (1986), Seifert, R., et al.: J. Biol. Chem., 264, 8771 (1989), Gahl, W., et al.: Mol. Genet. Metab., 76, 234 (2002), Card, J., et al.: Toxicol. Sci., 75, 169 (2003),

Stability Hygrscopic
Applications N-(2,6-Dimethylphenyl)-2,2-dichloroacetamide is an intermediate used to prepare Ranolazine (R122500), an antianginal agent.
References Aalla, S., et al.: Org. Proc. Res. Dev.,16, 748 (2012)

Stability Hygroscopic
Applications N-​Ethyl-​α-​methyl-​3-​(trifluoromethyl)​-benzeneethanamine hydrochloride has been used in case studies for the study of impulsivity, motor skills, and anxiogenic effects in the neuroscience community.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References Whitney, K.N., et al.: Exp. Clin. Psychopharm., 21, 345-54 (2013); Arrant, A.E., et al.: Neuropharmacology, 65, 213-22 (2013)

Applications 2-hydroxy-5-iodobenzoic Acid is a reagent in various organic chemical reactions leading to pharmaceutical compounds. It is involved in the synthesis of labelled benzamide analogs for tumor imaging as well as the synthesis of the dye, Congo Red, for biological analyses.
References Tu, Z. et al.: J. Med. Chem., 50, 3194 (2007); Sellarajah, S. et al.: J. Med. Chem., 47, 5515 (2004);

Applications Tert-butyl 4-Aminobutanoate Hydrochloride is used as a substance in the prevention of drug-induced memory impairement by immunopharmacotherapy.
References Treweek, J. B., et al.: J. Med. Chem., 51, 6866 (2008)

Stability Hygroscopic
Applications Aniline Hydrochloride is used in the making of new azo pyridone dyes for polyester fabrics and in the microwave-assisted preparation of arylazoaminopyrazoles as disperse dyes for textile printing.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References Khattab, T. A., et al.: Z. Anorg. Allg. Chem., 642, 766 (2016); Al-Etaibi, A., et al.: Eur. J. Chem., 5, 321 (2014)

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.
References Feroci, M. et al.: J. Org. Chem., 72, 200 (2007); Xu, P. et al.: J. Org. Chem., 71, 4364 (2006);

Stability Hygroscopic
Applications 2,6-Difluoroaniline is an important chemical in the sythesis technology for high-efficiency insecticide.
References Xiong, G.-I. et al.: ANh. Nong. Kex., 36, 9848 (2008);

Stability Light Sensitive
Applications 4-Bromo-1-butene is a brominated alkene used as a reagent in organic synthesis.

Applications 1-(Bromomethyl)-2-nitrobenzene is a reagent used in the synthesis of 1,3,4-oxadiazole derivatives possessing a benzotriazole moiety leading to anticancer activity. Also used in the preparation of antifungal triazole derivatives.
References Zhang, S. et al.: Bioorg. Med. Chem., 21, 3723 (2013); Yu, S. et al.: Arch. Pharm. Res., 36, 1215 (2013);

Stability Volatile
Applications 2,2,3,3,4,4-Hexafluoro-1-butanol has been used in phase-​transfer catalysis as a reactant in the synthesis process of fluorinated allylic ethers and thio ethers.
References Boutevin, B., et al.: J. Fluorine. Chem., 35, 399-410 (1987).

Applications 2-Chloro-N-(hydroxymethyl)acetamide is an organic building block, and an amidomethylating reagent.
References Haridas, A. K., et al.: RSC Adv., 4, 12188 (2014); Teramoto, K., et al.: Polym. J., 34, 363 (2002)

Applications 3-Chlorotoluene is used as a reagent to synthesize 4-Arylchromene derivatives, compounds that induce apoptosis and act as anti-cancer agents. 3-Chlorotoluene is also used as an ingredient in deodorant, and is suspected to cause allergic contact dermatitis in humans.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References Rastogi, S., et al.: Contact Derm., 39, 293 (1998); Tsygankova, I. & Zhenodarova, S.: Russ. J. Gen. Chem., 84, 89 (2014)

Applications Cyclopentyl chloride (cas# 930-28-9) is a useful research chemical.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package

Stability Hygroscopic
Applications 2-Chloromandelic acid

Stability Hygroscopic
Applications Trimethylsulfonium Chloride is used as a reagent in the preparation of spirastrellolide A Me ester via Suzuki coupling, Yamaguchi lactonization, Julia-Kocienski olefination, bond cleavage, and ozonolysis, its antitumor activity, and SAR with truncated variants.
References Arlt, A., et al.: Chem. Eur. J., 19, 3596 (2013)

Applications Iodosobenzene (cas# 536-80-1) is a useful research chemical.

Applications 4-Chlorophenylamine is an organic chemical reagent and precursor in the synthesis of various drugs and dyestuffs. It is a building block and a degredation product of Chlorhexidine (C335045), an antiseptic as well as azo dyes and pigments in printing and textiles.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References Leucea, D. et al.: Ind. Text., 61, 304 (2010); Below, H. et al.: Microchim. Acta 146, 129 (2004);

Applications Tetrachlorohydroquinone is a chlorinated hydroquinone compound used as an analytical standard.

Stability Hygroscopic
Applications 3-[[[2-[(Diaminomethylene)amino]-4-thiazolyl]methyl]thio]propanimidamide hydrochloride (cas# 76833-47-1) is a useful research chemical.

Applications Used for preparation of substituted indazole amides as glucokinase activators.
References Perles, J., et al.: J. Mater. Chem., 14, 2683 (2004),

Applications Trityl Chloride is an alkyl halide commonly used in organic synthesis to introduce the trityl protecting group. Trityl Chloride is used in the preparation of S-trityl-L-cysteine (STLC), a tight-binding inhibitor of Eg5 that prevents mitotic progression.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References DeBonis, S. et al.: J. Med. Chem., 51, 1115 (2008); Chadwick, D.J. et al.: J. Chem. Soc. Perk. Trans. Org. Bio-Org. Chem., 1, 102 (1983);

Applications Ethyl difluoroacetate

Applications 3,4-Dimethyl-1-(1-chloroethyl)benzene is an organic reagent used in pharmaceutical synthesis requiring phenylethyl derivatives.
References McLennan, D. et al.: Can. J. Chem., 64, 1201 (1986);

Applications Phenyl N-​(2-​Chloro-​4-​hydroxyphenyl)​carbamate is a reagent used in the prepartion of quinoline-carboxamide compounds including Lenvatinib (L329400), an orally active inhibitor of multiple receptor tyrosine kinases including VEGF, FGF and SCF receptors.
References Wang, N. et al.: Faming Zhuanli Shenqing (2017), CN 106632033 A 20170510.

Applications 2-Chlorobenzyl Chloride is a reagent in the synthesis of piperidine derivatives which are used as human heat shock protein 70 inhibitors for treatment of drug-resistant tumors. 2-Chlorobenzyl Chloride is also used as a reagent in the synthesis of benzothiazole derivatives bearing indole-based moiety which can exhibit anticancer activity.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References Zeng, Y., et al.: Eur. J. Med. Chem., 97, 19 (2015); Ma, J., et al.: Eur. J. Med. Chem., 96, 173 (2015)

Applications Fadrozole hydrochloride is a very potent and selective inhibitory effect of the aromatase enzyme system.

Applications 3,5-Difluorobenzylamine is a useful reagent for reductive amination.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References Cantrill, S., et al.: J. Org. Chem., 66, 6857 (2001);

Applications 4-chloro-1,2-dimethylbenzene (cas# 615-60-1) is a useful research chemical.

Applications 1,4-Dibromobutane is used as a catalyst in the polymerization of 2-oxazolines. Also used in the synthesis of cholinesterase inhibitors used against Alzheimer’s disease.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References Kobayashi, S. et al.: Macromol., 25, 3232 (1992); Xie, S. et al.: Eur. J. Med. Chem., 64, 540 (2013);

Applications Bromonitromethane is used in the preparaton of [2,3-d]pyrimidines as inhibitors of Lck which can be used in the treatment of diseases where T-cell proliferation is unwanted. It is also used in the synthesis of isoxazoline N-oxides.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References DiMauro, E. et al.: Bioorg. Med. Chem. 17, 2305 (2007); Kunetsky, R. et al.: Org. Lett., 5, 4907 (2003);

Applications Anticonvulsant against audiogenic convulsion.
References Kim, K., et al.: J. Med. Chem., 51, 5330 (2008), Ruel, R., et al.: Bioorg. Med. Chem. Lett., 18, 2985 (2008),

Applications 9,9-Bis (4-Hydroxyphenyl) Fluorene is used in the production of polyarylene ethers and extensively used in the study of polymer electrolyte membranes with the potential for fuel cell application.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References Miyatake, K. et al.: J. Am. Chem. Soc., 129, 3879 (2007); Chikashige, Y. et al.: Macromolecules, 38, 7121 (2005);

Applications An intermediate for the synthesis of antitumor drugs used in chemotherapy
References Foster, A.B., et al.: J. Med. Chem., 24, 1399 (1981), Sorsa, M., et al.: Mutat. Res. Genet. Toxicol., 204, 465 (1988),

Applications 3,5-Dichloro-4-(1,1,2,2-tetrafluoroethoxy)aniline (cas# 104147-32-2) is a useful research chemical.

Stability Light Sensitive
Applications Methyl 2-Iodobenzoate is used as a reagent in the synthesis of Montelukast Sodium Salt (M568000); a selective leukotriene D4-receptor antagonist that is used as an antiasthmatic. Methyl 2-Iodobenzoate is also used as a reagent in the synthesis of isoquinolinone-based tricycles as polyribose polymerase-1 inhibitors.
References Bollikonda, S., et al.: J. Org. Chem., 80, 3891 (2015); Labelle, M., et al.: Bioorg. Med. Chem. Lett., 5, 283 (1995); Jones, T.R., et al.: Can. J. Physiol. Pharmacol., 73, 191 (1995); Markham, A. and Faulds, D.: Drugs, 56, 251 (1998); Chen, J., et al.: Bioorg. Med. Chem. Lett., 24, 2669 (2014)

Applications 2-bromo-6-chlorophenol (cas# 2040-88-2) is a useful research chemical.

Applications 2-Azidoethanamine Hydrochloride is used as a reagent for pyrrolobenzodiazepine dimers that are used in the treatment of proliferative disorder such as cancer.
References Song, Ho Young. et al., 135 pp. PCT Int. Appl. (2018);

Applications 2-CHLOROTOLUENE (cas# 95-49-8) is a useful research chemical.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package

Applications 4-Chloro-1,1’-biphenyl (cas# 2051-62-9) is a compound useful in organic synthesis.

Stability Moisture Sensitive
Applications Methyltin Trichloride is used in the synthesis of metallasilesesquiloxanes used for their important application to silica surfaces. Also used in the preparation of organotin(IV) complexes showing antibacterial activities.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References Feher, F. et al.: J. Am. Chem. Soc., 114, 3859 (1992); Salam, M., Heteroatom Chem., 24, 43 (2013);

Applications 2-(2-Chloro-4-iodophenylamino)-3,4-difluorobenzoic Acid (cas# 303175-44-2) is a compound useful in organic synthesis.

Applications 1,5-Dichloropentane is used in bacterial and spontaneous dehalogenation of organic compounds.
References Omori, T., et al.: Appl. Environ. Microbiol., 35, 512 (1978)

Applications 3,5-Diiodothyronamine Hydrobromide is an intermediate in the synthesis of Thyronamines and related analogues.
References Hart, M. E., et al.: J. Med. Chem., 49, 1101 (2006);

Applications tert-butyl N-[3-(chlorosulfonyl)propyl]carbamate (cas# 1196153-59-9) is a useful research chemical.

Applications It is used in a new method for conjugation of carbohydrates to proteins using an aminooxy-thiol heterobifunctional linker.
References Tietze, L., et al.: Bioconjugate Chem., 2, 148 (1991), Peeters, C., et al.: Infect. Immun., 60, 1826 (1992), Brask, J., et al.: J. Pept. Sci., 6, 290 (2000),

Applications TRIMETHYLSTEARYLAMMONIUM CHLORIDE (cas# 112-03-8) is a useful research chemical.