High Performance Liquid Chromatography:
Article Title: Development of a fluorescence resonance energy transfer assay for monitoring bacterial collagenase triple-helical peptidase activity
Article Snippet: .. The reagents and solvents used for peptide synthesis were obtained as follows: N , N -diisopropylethylamine (DIPEA), N -methylmorpholine (NMM), acetonitrile (HPLC grade), 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU), piperidine, and water (HPLC grade) from Sigma-Aldrich; N -hydroxybenzotriazole•H2 O (HOBt•H2 O), N α -(9-fluorenylmethoxycarbonyl)- N ε -(7-methoxycoumarin-4-yl)-acetyl-L-lysine [Fmoc-Lys(Mca)], and N α -(9-fluorenylmethoxycarbonyl)- N ε -(2,4-dinitrophenyl)-L-lysine [Fmoc-Lys(Dnp)] from Anaspec (Fremont, CA); methyl tert -butyl ether (MTBE) from J.T. .. Baker; Fmoc-amino acids, 2-(6-chloro-1H-benzotriazole-1-yl)-1,1,3,3-tetramethylaminium hexafluorophosphate (HCTU), and N , N -dimethylformamide (DMF) (AR grade) from AGTC Bioproducts (Wilmington, MA); 2,5-dihydroxybenzoic acid (DHB) and trifluoroacetic acid (TFA) from Thermo Fisher Scientific (Waltham, MA); N α -(9-fluorenylmethoxycarbonyl)-4 R -fluoro-L-proline (Fmoc-Flp) from Bachem (Torrance, CA); decanoic acid (designated C10 ) and dithiothreitol (DTT) from Acros Organics (Geel, Belgium); and NovaPEG Rink amide resin from EMD Millipore (San Diego, CA). Article Title: Synthesis and in vitro biochemical evaluation of oxime bond-linked daunorubicin–GnRH-III conjugates developed for targeted drug delivery
Article Snippet: .. Boc-aminooxyacetic acid (Boc-Aoa-OH), aminooxyacetic acid, scavengers, coupling agents and cleavage reagents (1-hydroxybenzotriazole hydrate (HOBt), N,N’ -diisopropylcarbodiimide (DIC), triisopropylsilane (TIS), piperidine, 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU), trifluoroacetic acid (TFA), diisopropylethylamine (DIPEA), acetic anhydride (Ac2 O), methanol (MeOH), n -butyric anhydride and solvent for HPLC (acetonitrile (ACN)) were obtained from Sigma-Aldrich Kft (Budapest, Hungary). ..
Article Title: Controlled Biodegradation of Self-Assembling ?-hairpin Peptide Hydrogels by Proteolysis with Matrix Metalloproteinase-13
Article Snippet: Piperidine and 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) was purchased from Sigma-Aldrich.
Article Title: Switching from Controlled Ring-Opening Polymerization (cROP) to Controlled Ring-Closing Depolymerization (cRCDP) by Adjusting the Reaction Parameters That Determine the Ceiling Temperature
Article Snippet: Materials Hexanediol (Sigma-Aldrich, Sweden) and 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) (Sigma-Aldrich, Sweden) were stored under an inert gas atmosphere prior to use.
Article Title: Phage Display-Based Homing Peptide-Daunomycin Conjugates for Selective Drug Targeting to PANC-1 Pancreatic Cancer
Article Snippet: Chemicals All amino acid derivatives and Wang resin were purchased from Iris Biotech GmbH (Marktredwitz, Germany), whereas reagents for coupling and cleavage (N,N′ -diisopropylcarbodiimide (DIC), 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU), 1-hydroxybenzotriazole hydrate (HOBt), 4-(dimethylamino)pyridine (DMAP), triisopropylsilane (TIS), trifluoroacetic acid (TFA)) and ninhydrin were delivered by Sigma-Aldrich Kft. (Budapest, Hungary).
Article Title: Synthesis of Photoresponsive Dual NIR Two-Photon Absorptive Fullerene Triads and Tetrads
Article Snippet: .. The reagents 1,8-diazabicyclo[5,4,0]-undec-7-ene (DBU), 1-bromooctadecane, 2-bromofluorene, sodium t -butoxide, potassium t -butoxide, aluminum chloride, titanium chloride, rac -BINAP, tris (dibenzylideneacetone)dipalladium(0), malononitrile, and 2-methoxy-ethanol, were purchased from Aldrich Chemicals (city, state abbrev, USA) and used without further purification. .. The chemical 1-bromooctadecane was purchased from Tokyo Chemical Industry Co., Ltd. (Waltham, MA, USA). Article Title: Elucidating a Unified Mechanistic Scheme for the DBU-Catalyzed Ring-Opening Polymerization of Lactide to Poly(lactic acid)
Article Snippet: .. 1,8-Diazabicyclo[5.4.0]undec-7-ene (DBU) was purchased from Sigma-Aldrich and was used without further purification. .. Article Title: Synthesis and Cytotoxic Activity of Some 3-Benzyl-5-Arylidenefuran-2(5H)-ones
Article Snippet: .. Commercially available tert -butyldimethyl-silyltrifluoromethanesulfonate (TBDMSOTf), 8-diazabicyclo[5.4.0]-undec-7-ene (DBU), and aldehydes were purchased from Aldrich (Milwaukee, WI, USA) and utilized without further purification. ..