IARC MONOGRAPHS ON THE EVALUATION OF CARCINOGENIC ...

Antitumour action: Aristoloside, aristolic acid II, aristolochic acids I, II, IV, IIIa, IVa
and aristolactam IIIa (Nagasawa et al., 1997; Wang et al., 2000).
1.4.3 Aristolochia fangchi
Hypotensive activity: magnoflorine (Zheng et al., 1999).
1.5 Sales and consumption
About 320 tonnes of dried stems of A. manshuriensis were consumed in China in
1983 (Chinese Materia Medica, 1995).
1.6 Components with potential cancer hazard: aristolochic acids
For the purpose of this monograph, unless otherwise specified, the term ‘aristolochic
acids’ refers to an extract of Aristolochia species comprising a mixture of aristolochic
acid I and its demethoxylated derivative, aristolochic acid II. Aristolochia species also
contain the related aristolactams, which are phenanthrene cyclic amides (EMEA, 2000).
In some of the older literature, it is unclear whether individual compounds or mixtures
are being discussed when referring to ‘aristolochic acid’.
1.6.1 Nomenclature
Aristolochic acid I
Chem. Abstr. Serv. Reg. No.: 313-67-7
Deleted CAS Nos.: 12770-90-0; 61117-05-3
Chem. Abstr. Serv. Name: 8-Methoxy-6-nitrophenanthro[3,4-d]-1,3-dioxole-5carboxylic
acid
Synonyms and trade names: Aristinic acid; aristolochia yellow; aristolochic acid A;
aristolochin; aristolochine; Descresept; isoaristolochic acid; 8-methoxy-3,4methylenedioxy-10-nitrophenanthrene-1-carboxylic
acid; 3,4-methylenedioxy-8methoxy-10-nitro-1-phenanthrenecarboxylic
acid; Tardolyt; TR 1736
Aristolochic acid II
SOME TRADITIONAL HERBAL MEDICINES 79
Chem. Abstr. Serv. Reg. No.: 475-80-9
Deleted CAS No.: 79468-63-6
Chem. Abstr. Serv. Name: 6-Nitrophenanthro[3,4-d]-1,3-dioxole-5-carboxylic acid
Synonyms: Aristolochic acid B; 3,4-methylenedioxy-10-nitrophenanthrene-1-carboxylic
acid