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1.1 REAGENTS

APPENDIX 1 GENERAL INFORMATION

       The specifications given below are strictly for the use of the materials as reagents. The inclusion of a material in this Appendix does not imply that it is suitable for use in medicines. Exceptionally, a trademark or supplier may be indicated for certain reagents whose availability is limited. It is however acceptable to use reagents from another source provided that they comply with the standards of the Pharmacopoeia.

 

1.1 REAGENTS

       The name of a substance or solution indicates a reagent included in the following list. The specifications given for reagents do not necessarily guarantee their quality for use in medicine.

       Some of the reagents included may be injurious to health. Important cautions have been stated for these reagents. They should be handled in accordance with good laboratory practice and any relevant regulations.

       Reagents in aqueous solution are prepared using water. Where the name of the solvent is not stated, an aqueous solution is intended.

       Unless otherwise specified, the reagents and reagent solutions are to be stored in wellclosed containers. The labelling should comply with the relevant national legislation.

Bergenin C14H16O9 = 328.27
Use analytical reagent grade of commerce.
DESCRIPTION White crystalline powder.
MELTING TEMPERATURE 238º (Appendix 4.3).

Store in tightly closed containers in a dry place, at a temperature below ‒20º.

Friedelin C30H50O = 426.72
Use analytical reagent grade of commerce.
DESCRIPTION White powder.
MELTING RANGE 262º to 265º (Appendix 4.3).

Store in tightly closed containers in a cool and dry place.

Mitragynine C23H30N2O4 = 398.50
Use analytical reagent grade of commerce.
DESCRIPTION Off-white to brown crystalline powder.
SOLUBILITY Slightly soluble in ethanol and in methanol.
MELTING TEMPERATURE About 100º (Appendix 4.3).

Store in tightly closed containers.

THP 2021 Supplement 2023 • 1.1 REAGENTS
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