Unity 300 mhz

Manufactured by Agilent Technologies

The Unity-300 MHz is a nuclear magnetic resonance (NMR) spectrometer designed for analytical chemistry applications. It provides a 300 MHz operating frequency for the analysis of chemical samples.

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Lab products found in correlation

Omni flex, by Bruker (2 mentions) 2401pc spectrophotometer, by Shimadzu (1 mentions) Ft ir 4100, by Jasco (1 mentions)

Close spelling variants of this product

Unity Inova 300 MHz spectrometer Unity 300 MHz spectrometer Unity 300

3 protocols using unity 300 mhz

Spectroscopic Characterization of Compounds

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¹H and ¹³C NMR spectra were recorded on a Varian Unity-300 MHz with tetramethylsilane (TMS) as an internal reference. Infrared (IR) spectra were measured on a Nicolet FT-SSX spectrophotometer (Bruker, Billerica, MA, USA). Elemental analysis was determined by Galbraith Laboratories, INC Knoxville (Sycamore, MO, USA). FAB+ mass spectra were taken on a JEOL JMS AX505 HA instrument (JEOL manufacturers, Tokyo, Japan). Electrospray mass spectra were taken on a Bruker Daltonic, Esquire 6000 (Bruker, Billerica, MA, USA). Matrix-assisted laser desorption/ionization-time of flight (MALDI-TOF) mass spectra were taken on a Bruker Omni FLEX using 9-nitroanthracene (9NA) as a matrix. The ultraviolet–visible (UV-Vis) absorption spectra were obtained at room temperature with a Shimadzu 2401 PC spectrophotometer (Shimadzu, Kyoto, Japan).

Cortez-Maya S., Pedro-Hernández L.D., Martínez-Klimova E., Ramírez-Ápan T, & Martínez-García M. (2019). Anticancer Activity of Water-Soluble Olsalazine-PAMAM-Dendrimer-Salicylic Acid-Conjugates. Biomolecules, 9(8), 360.

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Spectroscopic Characterization of Compounds

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¹H and ¹³C nuclear magnetic resonance NM spectra were recorded on a Varian Unity-300 MHz with tetramethylsilane (TMS) as an internal reference. Infrared (IR) spectra were measured on a Bruker FTIR tensor 27 Nicolet FT-SSX spectrophotometer (Bruker, Billerica, MA, USA). Elemental analysis was determined by Galbraith Laboratories, INC Knoxville. FAB+ mass spectra were taken on a JEOL JMS AX505 HA instrument (JEOL manufacturers, Tokyo, Japan). Electrospray mass spectra were taken on a Bruker Daltonic, Esquire 6000 (Bruker, Billerica, MA, USA). MALDI-TOF mass spectra were taken on a Bruker Omni FLEX (Bruker manufacturers, Billerica, MA, USA) using 9-nitroanthracene (9NA) as a matrix. The ultraviolet-visible UV-vis absorption spectra were obtained at room temperature with a Shimadzu 2401 PC spectrophotometer (Shimadzu manufacturers, Kyoto, Japan).

Pedro-Hernández L.D., Martínez-Klimova E., Cortez-Maya S., Mendoza-Cardozo S., Ramírez-Ápan T, & Martínez-García M. (2017). Synthesis, Characterization, and Nanomedical Applications of Conjugates between Resorcinarene-Dendrimers and Ibuprofen. Nanomaterials, 7(7), 163.

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Synthesis and Characterization of Substituted Compounds

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Unless otherwise noted, all manipulations were carried out under inert argon atmosphere in flame-dried glassware. “Iron-free” glassware was prepared by soaking in a 6M HCl acid bath overnight. Tetrahydrofuran (THF) was freshly distilled before use from sodium benzophenone ketyl, dichloromethane (CH₂Cl₂) was freshly distilled before use from CaH₂, and triethylamine was freshly distilled before use from CaH₂. Flash chromatography was carried out using 60-Å, 230–400 mesh silica gel. All organic reagents were used as purchased from Acros Organics, Fisher Scientific, or Sigma–Aldrich. NMR spectra were taken on either a Varian Unity 300 MHz, Varian L900 400 MHz, or a Varian 500 MHz. IR spectra were taken on a Jasco FT/IR – 4100. HRMS data were obtained on either a Waters LCT Premier XE ESI-LC–MS TOF or a Waters GCT EI-TOF. Syringe filters used were 0.22 μm Millipore Millex Syringe Drive Filter Unit, PES express.
Please also see the Supporting Information for the InChI codes and selected biological activities of the compounds 2a–e.

Bieliauskas A.V., Weerasinghe S.V., Negmeldin A.T, & Pflum M.K. (2016). Structural Requirements of Histone Deacetylase Inhibitors: SAHA Analogs Modified on the Hydroxamic Acid. Archiv der Pharmazie, 349(5), 373-382.

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