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Transdermal Formulation Elemental Impurities Testing

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Elemental impurity research team at CD Formulation can provide transdermal formulation elemental impurity testing services based on ICH guidelines and relevant requirements of various countries' pharmacopeias. Our team has accumulated rich work experience is equipped with high-end instruments and equipment and has completed elemental impurity research services for more than 100 varieties.

About Elemental Impurities Testing of Transdermal Formulations

The control of impurities in the drug production process is crucial to drug safety. Elemental impurities cannot provide therapeutic effects for patients and may affect the safety and effectiveness of the final pharmaceutical product. Some studies have shown that elemental impurities may be the cause of various cancers and neurological diseases. Therefore, relevant regulations, such as ICH Q3D, USP <233>, etc., have put forward requirements for the control of elemental impurities in raw materials, formulations, drug packaging materials, and medical devices.

What Can We Offer

CD Formulation is equipped with an ICP-MS inductively coupled plasma mass spectrometer, which can provide you with the following detection methods:

Instrument Detailed Information
Atomic absorption spectroscopy (AAS) It can determine more than 70 elements with a detection limit of mg/kg level. It has the advantages of high accuracy and good repeatability, and the equipment is easy to operate. However, AAS also has certain limitations. Identifying refractory and non-metallic elements poses a challenge, significantly hampers the analysis of intricate samples, and prevents the simultaneous determination of multiple elements.
Inductively coupled plasma atomic emission spectroscopy (ICP-AES/OES) The detection limit of most elements of ICP-AES is at the μg/kg level, with high precision and accuracy, and a wide linear range. It is simpler to use than ICP-MS and can determine multiple elements at the same time. However, the measured spectral lines are relatively complex and there is spectral interference.
Inductively coupled plasma mass spectrometry (ICP-MS) An advanced technology for elemental analysis that can quantitatively determine the element content and qualitatively analyze the element type. The detection limit can reach the ng/kg level, with the advantages of high sensitivity and precision, wide linear range, and strong anti-interference ability. It can measure multiple elements at the same time. Some common light elements (such as S, Ca, Fe, K, and Se) have serious interference. ICP-MS is the mainstream test method for testing element content.

Our Workflow for Elemental Impurities Testing of Transdermal Formulation

The workflow of elemental impurities testing.Fig.1 Flow chart of elemental impurities testing. (CD Formulation)

  1. Prepare Instruments: Select the appropriate instruments based on the test method, such as an Inductively Coupled Plasma Mass Spectrometer (ICP-MS) or an Inductively Coupled Plasma Optical Emission Spectrometer (ICP-OES).
  2. Sample Preparation: Pre-treat the sample to minimize matrix interference and extract elemental impurities. Pre-treatment methods may include direct dissolution, acid digestion (e.g., wet digestion, microwave digestion), among others. The specific method should be chosen based on the sample characteristics and test requirements.
  3. Test Process: Prior to testing, calibrate the instrument to ensure its accuracy and stability. Inject the pre-treated sample solution into the instrument for analysis. Calculate the content of elemental impurities in the sample based on the instrument's test results.
  4. Data Analysis and Reporting: Conduct a statistical analysis of the test data and compare it with standard limits to evaluate whether the content of elemental impurities in the transdermal preparation meets the requirements. Compile a test report that includes details such as test methods, instrument information, sample details, test results, and conclusions.

Why Choose Us for Elemental Impurities Testing of Transdermal Formulation?

  • Our professional technical team is equipped with advanced IC, ICP-MS, digestion equipment, and other equipment; with high sensitivity, it can accurately detect ppb level.
  • Our technicians have rich testing experience and have completed more than 100 varieties of elemental impurity research services.
  • We can determine element control strategies according to customer requirements and realize customized solutions.

Published Data

Technology: Methods for elemental impurities testing

Journal: Heliyon

IF: 4.0

Published: 2020

Results: Elemental impurities in drug samples can generate unwanted pharmacological–toxicological effects, therefore they must be carefully monitored. This work presents elemental analysis of 23 analytes in omeprazole drug samples from seven different commercial brands considering reference, similar, and generic medicines using inductively coupled plasma mass spectrometry (ICP-MS).

We can provide you with method verification of elemental impurities, quantitative testing services, elemental semi-quantitative full scan screening testing services, etc. If you have any needs, please feel free to contact us and our colleagues will reply to you within three working days.

References

  1. Fernanda C. Pinheiro, Ariane I. Barros. Elemental impurities analysis in name-brand and generic omeprazole drug samples. Heliyon. 2020 Feb; 6(2): e03359.
How It Works
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STEP 3
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