(1993; 36 pages)
Annex 2 - List of available International Infrared Reference Spectra
International Infrared Reference Spectra are established on the advice of the WHO Expert Committee on Specifications for Pharmaceutical Preparations. Full-scale reproductions of spectra produced from authenticated material on a suitable instrument are supplied for use in identification tests described in the specifications for quality control of drugs published in The international pharmacopoeia or proposed in draft monographs.
Precise instructions for the preparation of spectra are given on the label of each reference spectrum. All International Infrared Reference Spectra are distributed together with a document giving further details on the use of such spectra, entitled “General recommendations for the preparation and use of infrared spectra in pharmaceutical analysis”.
Orders for International Infrared Reference Spectra should be sent to:
WHO Collaborating Centre for Chemical Reference Substances
S-105 14 Stockholm
Telex: 115 53 APOBOL S
Fax: 46 8 740 60 40
The following International Infrared Reference Spectra are currently available from the Centre:1
1 Spectra for several other substances are still being validated and are not yet available for distribution.
chlorphenamine hydrogen maleate
diethylcarbamazine dihydrogen citrate