Jnm eca 600ii nmr spectrometer

Manufactured by JEOL

Sourced in Japan

The JNM-ECA 600II NMR spectrometer is a high-performance nuclear magnetic resonance (NMR) instrument designed for analytical and research applications. It features a 600 MHz superconducting magnet and advanced electronics for acquiring and processing NMR data. The spectrometer is capable of performing various NMR experiments to analyze the molecular structure and properties of chemical samples.

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Lab products found in correlation

Ltq orbitrap xltm hybrid ion trap orbitrap fourier transform mass spectrometer, by Thermo Fisher Scientific (2 mentions) Dionex ultimate 3000, by Thermo Fisher Scientific (2 mentions) Nicolet is5 ftir spectrometer, by Thermo Fisher Scientific (1 mentions) Spectrum two fourier transform ir spectrometer, by PerkinElmer (1 mentions) Sta 449 f1 jupiter, by Netzsch (1 mentions)

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JNM-ECA 600II NMR spectrometer

3 protocols using jnm eca 600ii nmr spectrometer

Synthetic Characterization of Novel Compounds

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All reagents were purchased from Merck (Sigma-Aldrich, St. Louis, MO, USA) or Alfa (Alfa-Aesar, Ward Hill, MA, USA). Reactions were performed using a CEM Discover SP microwave reactor (CEM, Matthews, NC, USA). Melting points were determined on an apparatus Stuart SMP10 (Stone, UK) and are uncorrected. Infrared (IR) spectra were recorded on an ATR Zn/Se for a Nicolet™ iS 5 FT-IR spectrometer (Thermo Fisher Scientific, West Palm Beach, FL, USA). The spectra were obtained by the accumulation of 64 scans with 4 cm⁻¹ resolution in the region of 4000–400 cm⁻¹. All ¹H- and ¹³C-NMR spectra were recorded on a JEOL JNM-ECA 600II NMR spectrometer (600 MHz for ¹H and 150 MHz for ¹³C, Jeol, Tokyo, Japan) in dimethyl sulfoxide-d₆ (DMSO-d₆); ¹H and ¹³C chemical shifts (δ) are reported in ppm. High-resolution mass spectra were measured using a high-performance liquid chromatograph Dionex UltiMate^® 3000 (Thermo Scientific, West Palm Beach, FL, USA) coupled with an LTQ Orbitrap XL^TM Hybrid Ion Trap-Orbitrap Fourier Transform Mass Spectrometer (Thermo Scientific) equipped with a HESI II (heated electrospray ionization) source in the negative mode.

Kos J., Bak A., Kozik V., Jankech T., Strharsky T., Swietlicka A., Michnova H., Hosek J., Smolinski A., Oravec M., Devinsky F., Hutta M, & Jampilek J. (2020). Biological Activities and ADMET-Related Properties of Novel Set of Cinnamanilides. Molecules, 25(18), 4121.

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Synthesis and Characterization of Novel Compounds

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All reagents were purchased from Merck (Sigma-Aldrich, St. Louis, MO, USA) and Alfa (Alfa-Aesar, Ward Hill, MA, USA). Reactions were performed using a CEM Discover SP microwave reactor (CEM, Matthews, NC, USA). Melting points of 16 and 18 were determined on an apparatus STA 449 F1 Jupiter (NETZSCH, Selb, Germany). Infrared (IR) spectra were recorded on an UATR Zn/Se for a Spectrum Two™ Fourier-transform IR spectrometer (PerkinElmer, Waltham, MA, USA). The spectra were obtained by the accumulation of 32 scans with 4 cm⁻¹ resolution in the region of 4000–400 cm⁻¹. All ¹H- and ¹³C-NMR spectra were recorded on a JEOL JNM-ECA 600II NMR spectrometer (600 MHz for ¹H and 150 MHz for ¹³C, Jeol, Tokyo, Japan) in dimethyl sulfoxide-d₆ (DMSO-d₆). ¹H and ¹³C chemical shifts (δ) are reported in ppm. High-resolution mass spectra were measured using a high-performance liquid chromatograph Dionex UltiMate^® 3000 (Thermo Scientific, West Palm Beach, FL, USA) coupled with an LTQ Orbitrap XL^TM Hybrid Ion Trap-Orbitrap Fourier Transform Mass Spectrometer (Thermo Scientific) equipped with a HESI II (heated electrospray ionization) source in the positive mode.

Hošek J., Kos J., Strhársky T., Černá L., Štarha P., Vančo J., Trávníček Z., Devínsky F, & Jampílek J. (2019). Investigation of Anti-Inflammatory Potential of N-Arylcinnamamide Derivatives. Molecules, 24(24), 4531.

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Optimizing 180° Pulse Widths for fp-RFDR NMR

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All NMR experiments were performed on a 600 MHz JNM-ECA600II NMR spectrometer (JEOL RESONANCE Inc., Tokyo, Japan) equipped using a 0.75 mm ultrafast MAS probe. Powder samples of U-¹³C,¹⁵N-L-alanine and glycine were purchased from Isotec and were used without any modification. N-acetyl-¹⁵N-L-valyl-¹⁵N-L-leucine (NAVL) was prepared as explained elsewhere[16 , 17 ]. Samples were packed in a 0.75 mm zirconia rotor and all experiments were performed at room temperature (ca. 24 °C). Experiments were performed to optimize the width of the 180° pulse so that the loss of net magnetization after fp-RFDR can be minimized. The 180° pulse width that gave the maximal signal intensity after fp-RFDR irradiation was used in the subsequent experiments reported in this study. The experimentally optimized 180° pulse width was 5 μs for 110 kHz RF-field strength, 2.7 μs for 231 kHz, and 1.3 μs for 467 kHz. It should be noted that these 180° pulse widths are longer than that calculated from the respective RF field strength, because of the transients at the rising and falling edges of the pulses. All other experimental conditions used in this study are given in figure captions.

Nishiyama Y., Zhang R, & Ramamoorthy A. (2014). Finite-Pulse Radio Frequency Driven Recoupling with Phase Cycling for 2D 1H/1H Correlation at Ultrafast MAS Frequencies. Journal of magnetic resonance (San Diego, Calif. : 1997), 243, 25-32.

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