Patch testing with dithranol and its degradation products.
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Anthralin↗
Biomedical subjects
D R Forbes
Publications and source records attributed to D R Forbes.
Anthralin stability in various vehicles.
The stability of anthralin in white soft paraffin, Lassar's paste, and Unguentum Merck was assessed using a sensitive assay for degradation products, over a 1-year period. The stability was found to vary with concentration, weaker preparations being less stable. Significant degradation was observed in Unguentum Merck, and this increased when salicylic acid was present. Preparations with Unguentum Merck could be stabilized with ascorbic or oxalic acid. Salicylic acid stabilized anthralin in Lassar's paste but had a negligible effect in white soft paraffin. Preparations with white soft paraffin were relatively stable.
Anthralin↗
The stability of sodium nitroprusside infusion during administration by motorized syringe-pump.
This study examined the stability of concentrated sodium nitroprusside infusions during administration by a motorized syringe-pump system. Sodium nitroprusside and the free-cyanide degradation product were determined in infusion samples collected over periods of up to 24 h. Measures which were taken to protect the delivery system from light, ensured satisfactory stability of the infusion for at least 12 h from the time of preparation.
Cyanides↗