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IARC MONOGRAPHS ON THE EVALUATION OF CARCINOGENIC ...

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1.5.2 Structural and molecular formulae and relative molecular mass<br />

1-Hydroxyanthraquinone<br />

C 14H 8O 3<br />

Lucidin<br />

C 15H 10O 5<br />

1.5.3 Chemical and physical properties of the pure substance<br />

1-Hydroxyanthraquinone<br />

(a) Description: Fine yellow crystals (Buckingham, 2001)<br />

(b) Melting-point: 195–196 °C (Buckingham, 2001)<br />

Lucidin<br />

Relative molecular mass: 224.21<br />

Relative molecular mass: 270.24<br />

(a) Description: Yellow crystals (Buckingham, 2001)<br />

(b) Melting-point: 330 °C (Buckingham, 2001)<br />

(c) Dissociation constant: pK a, 8.11 (20 °C, water) (Buckingham, 2001)<br />

1.5.4 Analysis<br />

SOME TRADITI<strong>ON</strong>AL HERBAL MEDICINES 133<br />

O<br />

O<br />

O<br />

O<br />

A method using reversed-phase high-performance liquid chromatography (HPLC)<br />

has been described that allows the separation of 13 naturally occurring naphthoquinones<br />

and anthraquinones, including 1-hydroxyanthraquinone. The separation was achieved<br />

under isocratic and gradient conditions (Steinert et al., 1996).<br />

The following method has been used to determine hydroxyanthraquinones in experimental<br />

laboratory animal diet containing madder. Hydroxyanthraquinones were isolated<br />

OH<br />

OH<br />

CH 2OH<br />

OH

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