42034 Results for: "Chem Impex International"
Chloromethylated polystyrene 1.2 - 1.4 meq/g, granules
Supplier: Chem Impex International
Chloromethyl polystyrene and styrene monomers are copolymerized in order to obtain the Merrifield resin. This method avoids the use of carcinogenic chloromethyl methyl ether. This resin is used in the synthesis of peptide acids using Boc strategy and can be cleaved using HF or TFMSA. Different Boc protected amino acids attached to this resin are also available from stock. Please inquire.
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Na-Fmoc-Nb-boc-L-2,3-diaminopropionic acid 4-alkoxybenzyl alcohol resin 0.3 - 0.8 meq/g, granules
Supplier: Chem Impex International
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FMOC isothiocyanate ≥95% (by NMR), pale yellow solid
Supplier: Chem Impex International
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Potassium chloride 99.0-100.5% (by titrimetric analysis) USP
Supplier: Chem Impex International
Used in nutrient, gelling agent, salt substitute and yeast food.
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Trifluoroacetic acid ≥99.9%
Supplier: Chem Impex International
Suitable for peptide and protein synthesis.
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Chloromethylated polystyrene ≥1.20 meq/g, granules
Supplier: Chem Impex International
Chloromethyl polystyrene and styrene monomers are copolymerized in order to obtain the Merrifield resin. This method avoids the use of carcinogenic chloromethyl methyl ether. This resin is used in the synthesis of peptide acids using Boc strategy and can be cleaved using HF or TFMSA. Different Boc protected amino acids attached to this resin are also available from stock. Please inquire.
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tert-Butyl-5-amino-1H-indazole-1-carboxylate ≥98% (by HPLC)
Supplier: Chem Impex International
tert-Butyl-5-amino-1H-indazole-1-carboxylate ≥98% (by HPLC)
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2-Chloro-6-(trichloromethyl)pyridine ≥99%
Supplier: Chem Impex International
2-Chloro-6-(trichloromethyl)pyridine ≥99%
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Tris(dibenzylideneacetone)dipalladium(0) ≥97.0% (carbon basis)
Supplier: Chem Impex International
Catalyst for stille reactions of support bound stannane.
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Na-Boc-Nim-4-toluenesulfonyl-L-histidine merrifield resin 0.25 - 1.0 meq/g, cross-linked with 1% DVB 100-200 mesh
Supplier: Chem Impex International
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2,2,6,6-Tetramethylpiperidine ≥99%, liquid
Supplier: Chem Impex International
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Tazobactam sodium ≥91%, white to off-white powder
Supplier: Chem Impex International
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4-(3-Nitrophenyl)thiazole-2-carboxylic acid methyl ester ≥97% (by HPLC)
Supplier: Chem Impex International
4-(3-Nitrophenyl)thiazole-2-carboxylic acid methyl ester ≥97% (by HPLC)
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Trifluoroacetic acid ≥99.9%
Supplier: Chem Impex International
Suitable for peptide and protein synthesis.
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Basic Blue 24 (New Methylene Blue) ≥90% (dye content) C.I. 52030
Supplier: Chem Impex International
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Carbenicillin disodium salt, ≥ 770 mcg/mg USP
Supplier: Chem Impex International
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(S)-2-(((Benzyloxy)carbonyl)amino)-3-((tert-butoxycarbonyl)amino)propanoic acid ≥99% (by HPLC), white powder
Supplier: Chem Impex International
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Bromotrimethylsilane ≥98% (by titrimetric analysis), clear liquid
Supplier: Chem Impex International
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Sulfo-NHS (N-Hydroxysulfosuccinimide sodium salt) ≥99.5% (by HPLC)
Supplier: Chem Impex International
Sulfo-NHS is used for preparing hydrophilic active esters, e.g. for crosslinking agents.
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Triphosgene ≥99%, white to off white crystals
Supplier: Chem Impex International
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TBTU (O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate) ≥99% (by HPLC), powder
Supplier: Chem Impex International
Coupling reagent for peptide synthesis causing low racemization. R. Knorr, A. Trzeciak, W. Bannwarth and D. Gillessen, THL 30, 1927 (1989)
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(Methyl)triphenylphosphonium bromide ≥99% (by titrimetric analysis)
Supplier: Chem Impex International
Methyltriphenylphosphonium bromide is used for methylenation through the Wittig reaction.
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Na-Boc-Nin-formyl-L-tryptophan 4-oxymethylphenylacetamidomethyl resin 0.7 meq/g
Supplier: Chem Impex International