Chitosan (product no.: 448869, CAS no.: 9012-76-4, deacetylation > 75%) was purchased from Sigma-Aldrich (St. Louis, MO, USA). The 3-(trimethylsilyl) propionic-2,2,3,3-d4 acid, sodium salt (TSP-d4) was purchased from Cambridge Isotope Laboratories, Inc., Tewksbury, MA 01876, USA. Deuterium water (D2O: 99.8% purity) was purchased from Cambridge Isotope Laboratories, United States. The extraction solvents of methanol (CH3OH), chloroform (CHCl3), sulfuric acid (H2SO4), and nitric acid (HNO3) were purchased from Carlo Erba Reagents, France. Flake fish food (TetraBits) was purchased from Tera (Mele, Germany). All other reagents were of HPLC grade.
3 trimethylsilyl propionic 2 2 3 3 d4 acid sodium salt tsp d4
Manufactured by Cambridge Isotopes
Sourced in United States
3-(trimethylsilyl) propionic-2,2,3,3-d4 acid, sodium salt (TSP-d4) is a chemical compound used as a reference standard in nuclear magnetic resonance (NMR) spectroscopy. It provides a stable and highly soluble deuterated internal standard for the calibration and referencing of NMR spectra.
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Lab products found in correlation
Nitric acid hno3, by Carlo Erba (1 mentions)
Chitosan, by Merck Group (1 mentions)
Deuterium oxide d2o, by Cambridge Isotopes (1 mentions)
C57bl 6j mice, by Charles River Laboratories (1 mentions)
Tyrosol, by Yuanye Bio-Technology (1 mentions)
Pioglitazone, by Yuanye Bio-Technology (1 mentions)
Methanol, by Merck Group (1 mentions)
Methanol d4, by Cambridge Isotopes (1 mentions)
3 protocols using 3 trimethylsilyl propionic 2 2 3 3 d4 acid sodium salt tsp d4
1
Chitosan Extraction and Characterization
2
Dietary Modulation of Metabolic Health
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In total, 60 female C57BL/6J mice (6 weeks, 18–19 g) were purchased from Beijing Vital River Laboratory Animal Technology Co., Ltd. (Beijing, China). The normal diet (ND) was purchased from Xiao Shu Youtai (Beijing, China) Biological Technology Co., Ltd., and the high-fructose diet (HFru) was obtained from Tianjin Aoyide Experimental Products Co., Ltd. (Tianjin, China).
Tyrosol (purity ≥98%, S31415) and pioglitazone (purity≥98%, B21435) were purchased from Shanghai Yuanye Biological Technology Co., Ltd. (Shanghai, China). Salidroside (purity ≥98%) and hydroxyTyrosol (purity ≥98%) were obtained from Sichuan Victory Biological Technology Co., Ltd. (Sichuan, China). Deuterium oxide (D2O, 99.9% atom %D) and 3-(trimethylsilyl)-propionic-2,2,3,3-d4 acid sodium salt (TSP-d4, 98% atom %D) were purchased from Cambridge Isotope Laboratories (Cambridge, FL, United States). Methanol was purchased from Sigma-Aldrich (St. Louis, MO, United States).
Tyrosol (purity ≥98%, S31415) and pioglitazone (purity≥98%, B21435) were purchased from Shanghai Yuanye Biological Technology Co., Ltd. (Shanghai, China). Salidroside (purity ≥98%) and hydroxyTyrosol (purity ≥98%) were obtained from Sichuan Victory Biological Technology Co., Ltd. (Sichuan, China). Deuterium oxide (D2O, 99.9% atom %D) and 3-(trimethylsilyl)-propionic-2,2,3,3-d4 acid sodium salt (TSP-d4, 98% atom %D) were purchased from Cambridge Isotope Laboratories (Cambridge, FL, United States). Methanol was purchased from Sigma-Aldrich (St. Louis, MO, United States).
3
Synthesis of Ir(COD)(IMes)Cl Complex
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Complex precursor [Ir(COD)(IMes)Cl] (1) (IMes = 1,3-bis(2,4,6trimethylphenyl)imidazole-2-ylidene, COD = cyclooctadiene) was purchased from the Centre for Hyperpolarization in MRI of the University of York (UK). Pyridine (py), 4,4'-bipyridyl (bpy), nicotinamide (ni), N,Ndimethylnicotinamide (dmni), 2-ethylpyridine (2-epy), 3-ethylpyridine (3epy) and 4-ethylpyridine (4-epy) were purchased from Sigma-Aldrich. Methanol-d4, pyridine-d5 (py-d5) and 3-(trimethylsilyl)propionic-2,2,3,3-d4 acid sodium salt (TSP-d4) were purchased from Cambridge Isotope Laboratories. All chemicals are used as supplied. Relevant proton chemical shifts are provided in Table S1.
Para-hydrogen (p-H2) was produced by cooling normal hydrogen down to 77 K in the presence of hydrous ferric oxide (Molecular Products, Inc.). The resulting 51% p-H2, this percentage being controlled by Raman spectroscopy with experimental error of 2%, was transported to a glass container: in the absence of paramagnetic impurities, this percentage of p-H2 remains stable for several hours.
Para-hydrogen (p-H2) was produced by cooling normal hydrogen down to 77 K in the presence of hydrous ferric oxide (Molecular Products, Inc.). The resulting 51% p-H2, this percentage being controlled by Raman spectroscopy with experimental error of 2%, was transported to a glass container: in the absence of paramagnetic impurities, this percentage of p-H2 remains stable for several hours.
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