Benefit from our extensive experience in liquid chromatography

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Enhance your chromatography instrument

Enable trace analysis of anions by enhancing your ion chromatography instrument with an installation of the Xenoic® XAMS suppressor.

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Services

Improve analysis of polar compounds

Diduco help you to develop or improve chemical analysis methods performed on HPLC, UHPLC, LC-MS and related instruments.

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Focus industries

Pharmaceuticals

Modern healthcare depends on strict quality control and analyses determining identity and concentrations of active ingredients, impurities, raw materials, counterions and other excipients in pharmaceutical formulations. Diduco contributes by providing reliable products and developing new methods following the ICH guidelines.

Food & Beverage

Ensuring that water, juice, beer, wine and other beverages, dietary supplements and food ingredients, contain low levels of contaminants and are safe to eat, but include the stated amounts of nutrients, is of primary concern to ensure a healthy life for people.

Energy & Electronics

Producing and storing energy in an efficient, reliable and sustainable manner is a monumental challenge for mankind. In energy plants and battery electrolytes it is therefore important to monitor contaminants and degradation products, since they are likely to affect the productivity, safety and duration of the systems.

pharmaceutical

Published case study of analytical quality by design method development and validation

Diduco has published a scientific peer-reviewed case study on how modern analytical method development can be performed in the pharmaceutical industry. The work was performed according to analytical quality by design (AQbD) principles to establish the design space and robust setpoint of the ion chromatography assay, and then validated according to the guidelines established by the International Council for Harmonization (ICH).

food & beverage

Quantification of common anions in bottled drinking water according to EPA method 300.1A

Official procedure for quality control of drinking water according to the United States Environmental Protection Agency. This procedure allows quantification of the seven common inorganic anions fluoride, chloride, nitrite, bromide, nitrate, phosphate and sulfate in the ranges recommended by WHO and national authorities.

energy & electronics

Screening of contaminants and forced degradation products in lithium ion battery electrolyte

Electrolytes in rechargeable batteries for cars, mobile phones, and other portable electric devices typically contain negatively charged counterions that together with lithium and a non-aqueous solvent form an ionic liquid. The bis(fluorosulfonyl)imide anion is a rather new ionic liquid constituent which thus need new quality control procedures.

food & beverage, pharmaceutical

Analysis of dietary supplement capsules with glucosamine using a generic method for counterions

Oral glucosamine is a dietary supplement that is marketed to support the structure and function of joints and claimed to provide pain relief for people with arthritis and osteoarthritis, although there is no clear evidence that its benefit is significantly above placebo.

food & beverage, pharmaceutical

Separation of simple sugars and carbohydrates

Simple carbohydrates are frequent ingredients in drinks, food, dietary supplements and pharmaceutical formulations. One approach to their analysis is hydrophilic interaction chromatography combined with evaporative light scattering detection, although this might be challenging due to the possibility of reducing sugars to mutarotate and thereby change their conformation into other anomers with different retention.

food & beverage, pharmaceutical

Separation of organic acids by ion-exclusion chromatography

Separation of organic acids can be a challenging task due to their hydrophilic nature and structural diversity. One of the more traditional approaches to this analysis is ion exclusion chromatography, which offer complementary selectivity to other separation techniques, especially for the monovalent acids which tend to be more strongly retained in this mode.

food & beverage, pharmaceutical

Analysis of cannabinoids in dried industrial hemp after methanol extraction

The legislation in many countries allow cultivation of industrial hemp provided that the strains do not produce high amounts of tetrahydrocannabinol (THC) and other psychoactive cannabinoids classified as narcotic substances. These strains of cannabis sativa are instead typically rich in compounds such as cannabidiol (CBD) and cannabidiolic acid (CBDA).

chemical

Reaction monitoring of enzyme-catalysed one-pot cascade synthesis

The move towards a more sustainable world includes sourcing functional monomers for polymer synthesis from renewable natural products rather than from fossil-based sources. This green chemistry revolution often relies on the development of new reaction procedures efficiently catalysed by enzymes to involve fewer harmful chemicals.

pharmaceutical

Modernized assay for foscarnet following ICH guidelines

New preliminary assay for the antiviral medication foscarnet which is a DNA polymerase inhibitor that is used to combat herpes viruses, including drug-resistant cytomegalovirus, and to treat patients with HIV as part of salvage therapy. This method was developed by Diduco to meet the requirements in the ICH guidelines, as a contribution to the United States Pharmacopoeia initiative for modernized monograph methods.

pharmaceutical

Alternative method for determination of voriconazole impurity E

Voriconazole is an antifungal medication that is included on the WHO Model list of Essential Medicines. During synthesis of the active ingredient a resolving agent for chiral amines is often used, and it is thus necessary that the quality control prove that this substance is not present at harmful levels in the final product.

pharmaceutical

Analysis of clodronate related substances according to European Pharmacopoeia monograph

Official quality control method for the first-generation bisphosphonate clodronate, which inhibits bone resorption and is used to treat bone weakness or pain caused by cancer that has spread to the skeleton. This analysis was performed according to the European Pharmacopoeia monograph method which is used to determine related substances that could be present as impurities in the active ingredient.

food & beverage, pharmaceutical

Generic method for isocratic separation of fifteen common pharmaceutical counterions

Many medicines and dietary supplements are bases that carry a positive charge, and consequently these small molecules are accompanied by negatively charged counterions. Such anionic excipients may influence the properties of the pharmaceutical formulation and can also influence the effect of the active ingredient since different ion pairs can have different dissolution rates or abilities to penetrate cell walls.

Talk to us

Get in contact
I’ll be happy to answer any questions you might have regarding our products and services.

Tobias Jonsson
CEO, PhD in chemistry
Mobile: +46 705783490
E-mail: tobias@diduco.com