Other Solvents

Research Products International Corp TS-2 Tissue and Gel Solubilizer, Scintillation Grade, 500 Milliliters

TS-2 is a strong organic base formulated to solubilize biological materials. Its high water holding capacity will incorporate up to 450 mg of aqueous volume using just 1 ml of TS-2. This factor alone makes TS-2 an economical product to use. TS-2 is compatible with all aromatic hydrocarbon based scintillation cocktails and eliminates problems related to chemiluminescence. This provides accurate sample reproducibility.

The ratio of sample weight or volume to the TS-2 volume will vary. Some typical examples are listed below:
Sample Volume TS-2 Volume Plasma - 0.4ml to 1.0ml
Dilute Nucleic Acids - 0.5ml to 1.0ml
Dilute Amino Acids - 0.5ml to 1.0ml
Protein Homogenates - 0.4ml to 1.0 ml

Most sample digestion can be performed at room temperature, which also reduces the effects of color quenching.

Sigma Aldrich Fine Chemicals Biosciences Polyethylene glycol averag20KG

Poly (ethylene glycol) (PEG) is non-ionic hydrophilic and non-toxic polymer. It is widely used in the emerging field of polymerA€based drug delivery. PEG is available in different molecular weights. It facilitates the purification and crystal growth of proteins and nucleic acids. PEG and dextran together result in aqueous polymer two phase system which is required for the purification of biological materials. It also interacts with cell membrane thereby allowing cell fusion.

Sigma Aldrich Fine Chemicals Biosciences Tetrahydrofuran d8 99.5 at

Tetrahydrofuran-d8 (THf-d8 TDf) is a deuterated NMR solvent useful in NMR-based research and analyses. 1H NMR line shape analysis of the exchange rates of proton between methanol and acetic acid dissolved in THf-d8 was reported. It participates as a solvent in the synthesis of deuteriotris[bis(trimethylsilyl)amido]thorium and deuteriotris[bis(trimethylsiiyl)amido]uranium. Dynamic NMR spectroscopic study of 15N 15NAE-dipentadeuterophenylformamidine (DPfA) has been studied in THf-d8.

Medchemexpress LLC Racemic jasmonic acid-d5 | 2750534-78-0 | 99.0% | 1 MG

Racemic jasmonic acid-d5 is the deuterium-labeled (d5) racemate of jasmonic acid used as a tracer and internal standard for quantitative analysis by NMR, GC-MS, and LC-MS. It is typically supplied as a small solution-based pack and should be stored frozen for stability.

• Deuterium-labeled internal standard for quantitative assays.
• Compatible with NMR, GC-MS, and LC-MS workflows.
• Formula C12H13D5O3; molecular weight 215.30.
• Supplied as a solution in ethanol; store at -20 °C for up to 2 years.
• Analytical-grade purity reported on product page (conflicting values: 97.81% and ≥99.0%).

Medchemexpress LLC Octadecanoic-17,17,18,18,18-d5 acid | 211443-83-3 | MFCD01075453 | 98.4% | 289.51 g·mol-1 | C18H31D5O2 | 10 MG

Stearic acid-d5 is a deuterium-labeled analogue of stearic (octadecanoic) acid used as an internal standard for quantitative mass spectrometry. The compound (CAS 211443-83-3) contains five deuterium atoms and provides a consistent mass shift for accurate tracer-based quantification in biological and analytical samples. Supplied as a solid for preparation of stock solutions.

• Deuterated internal standard (d5) for GC-MS and LC-MS.
• Chemical formula C18H31D5O2; molecular weight ~289.51 g·mol-1.
• High isotopic purity for reliable mass spectrometry quantification.
• Suitable for preparation of stock solutions in common organic solvents.
• Commonly used in lipidomics, metabolism, and pharmacokinetic studies.

Medchemexpress LLC Glycerol tristearate-d105 | 125941-88-0 | 99.6% | 997.13 g·mol⁻¹ | C57H5D105O6 | 5 MG

Tristearin-d105 is the deuterium-labeled form of tristearin, a triglyceride composed of three stearic acid units. Supplied as a high-purity, isotope-labeled standard, it is intended for research use as a tracer or internal standard in quantitative analyses and for formulation studies involving lipid-based delivery systems.

• Deuterium-labeled triglyceride for tracing studies.
• High purity suitable for quantitative NMR, GC-MS, and LC-MS.
• Suitable as an internal standard for mass spectrometry assays.
• Applicable to solid-lipid nanoparticle formulation research.
• Supplied in small, weighed quantities optimized for analytical workflows.

Medchemexpress LLC L-methionine-13C,d5 | 2483824-33-3 | 98.0% | 155.23 | C413CH6D5NO2S | 10 MG

L-Methionine-13C,d5 is the 13C- and deuterium-labeled form of the essential amino acid L-methionine, supplied as a research reagent for tracer experiments, quantitative mass spectrometry, and metabolic studies. For research use only; not for human therapeutic use.

• Stable isotope labeled with 13C and five deuterium atoms.
• Molecular weight 155.23 for accurate mass-based quantitation.
• High purity (98%) suitable for analytical and tracer applications.
• Available in small, measured quantities for tracer dosing (1 mg, 5 mg, 10 mg).
• Store sealed, away from moisture and light; in solvent: -80°C up to 6 months, -20°C up to 1 month.