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View article: Diazotization titrations in pharmacopoeial quality control of medicines and proposals for their revision in the European Pharmacopoeia
Diazotization titrations in pharmacopoeial quality control of medicines and proposals for their revision in the European Pharmacopoeia Open
Based on the data in the Ph. Eur., some other newer pharmacopoeias and published experimental papers propose to revise the text of Ph. Eur. 2.5.8. First, it is necessary to specify which of the electrometric methods should be used to indic…
View article: Colour and content of some biologically active substances in natural products and products of natural origin
Colour and content of some biologically active substances in natural products and products of natural origin Open
The paper draws attention to the correlations between the results of instrumental colour measurements and the content of some biologically active organic substances (carotenoids, chlorophyll, anthocyanins, curcuminoids, etc.) in natural pr…
View article: Further development of the content of the national part of the Czech Pharmacopoeia 2017 in its supplements from the point of view of drug preparation in pharmacies
Further development of the content of the national part of the Czech Pharmacopoeia 2017 in its supplements from the point of view of drug preparation in pharmacies Open
The paper deals with developing the national part of the Czech Pharmacopoeia 2017 (CL 2017) in its supplements from 2018, 2019, and 2020. It focuses on the preparation of medicinal products in pharmacies. The possibilities of further devel…
View article: Theory and practice of pharmacopoeial control of quality of drugs and excipients X. Number of parallel determinations, processing of results and their use in the assessment of the content of active substances and excipients in the European Pharmacopoeia (Ph. Eur.)
Theory and practice of pharmacopoeial control of quality of drugs and excipients X. Number of parallel determinations, processing of results and their use in the assessment of the content of active substances and excipients in the European Pharmacopoeia (Ph. Eur.) Open
In the European Pharmacopoeia (Ph. Eur.) there is no prescribed number of parallel determinations of the content of active substances and excipients. The authors suggest adding at least three determinations. The results of parallel determi…
View article: Theory and practice of pharmacopoeial control of quality of drugs and excipients IX. The problem of tolerance limits for the content of active substances and excipients in the European Pharmacopoeia (Ph. Eur.)
Theory and practice of pharmacopoeial control of quality of drugs and excipients IX. The problem of tolerance limits for the content of active substances and excipients in the European Pharmacopoeia (Ph. Eur.) Open
Content tolerance limits should respect the acceptable variation in the content of the active substance or excipient from its production and the variability of the results of the analytical procedure prescribed to determine the content by …
View article: Theory and practice of pharmacopoeial control of the quality of drugs and excipients VII. The colour reference solutions of the European pharmacopoeia (Ph. Eur.)
Theory and practice of pharmacopoeial control of the quality of drugs and excipients VII. The colour reference solutions of the European pharmacopoeia (Ph. Eur.) Open
Data calculations of three different workplaces consistently show that the difference in colour ΔE (CIELAB) of some colour reference solutions according to Ph. Eur. with small colour and purified water are too small. As a result, there is …