Ryan Cheu

Background On January 2, 2020, Emery Pharma filed a Citizen Petition (Docket No. FDA‑2020‑P‑0042) with the FDA regarding the drug Ranitidine, which appear to produce unacceptably high levels of a cancer‑causing chemical when exposed to heat. Ranitidine is a common heartburn medication and is sold…

Every drop of blood is a snapshot of our health. From the genetic makeup of our genes we are actively expressing, the concentration of metabolites in our body, to the levels of our immunity to various toxins and pathogens, blood…

At Emery Pharma, our team of expert bioanalytical chemists routinely provides R&D support and GLP-compliant analytical services for our clients. Some of the services we offer include: high-performance liquid chromatography (HPLC) method development, method validation, method transfer, and analysis of…

Nuclear Magnetic Resonance (NMR) spectroscopy is an incredibly powerful analytical technique for characterizing molecular structures. In pharmaceutical development and chemical research, submitting accurate data to the FDA or other regulatory agencies requires full structural characterization. NMR  provides crucial evidence of…

Oral delivery is the well-known administrative drug discovery path accepted by both patients and manufacturers. According to a recent report published in Pharmaceutical Technology, achieving optimal physicochemical properties of biomolecules-including size and degree of surface polarity-is an ongoing challenge toward…

In nuclear magnetic resonance (NMR) spectroscopy, especially when running variable temperature (VT) NMR experiments, getting the temperature right is important. Changes in temperature can affect chemical shift accuracy, reaction kinetics, or molecular motion. The challenge is that the temperature shown…

In this Emery Pharma video we introduce the powerful NMR spectroscopy capabilities available at Emery Pharma. At the heart of our analytical chemistry services is our Bruker 400 MHz NMR spectrometer, a versatile instrument equipped with: A broadband probe, enabling…

Polysorbate 80 is a surfactant and emulsifier frequently found in foods, pharmaceutical drug products, as well as in biochemical solutions and preparations. Although its presence in foods is required to be documented by law, the exact concentration or proportion in…

Diffusion-Ordered SpectroscopY (DOSY) is a technique in which a mixture of signals from a mixture of compounds can be separated on the basis of their diffusion coefficients. Diffusion coefficients vary according to intrinsic factors such as the size and shape…

Do you have a need for NMR services beyond basic 1-D proton spectra? Do you need expertise in analyzing and interpreting NMR data for discussions or presentations or publications? We can help by obtaining the specific 1-D and 2-D NMR…