From a Kaju garu [Kajoe garoe4] = scented wood] of Macassar, the botanical origin of which was unknown, Van Rom1) Bull. Soc. chim. IV. 1 (1907), 493.
2) Report of Schimmel & Co. October 1895, 30.
3) Holmes, Pharmaceutical Journ. 75 (1905), 830. - P. Guigues, Bull. Sciences Pharmacol. 9 (1902), 33. - Report of Schimmel & Co. October 1906, 70 and April 1907, 94.
4) Kajugaru is also the designation for the wood of Gonysty/us Miguel/anus or Aqui/arfa Moskowskii. According to de Clercq (Nieuw planlkundig woorburgh obtained by steam distillation an oil that was studded with crystals and which was examined by P. A. A. F. Eyken1). After isolation and purification, the crystals were identified as guaiol (m. p. 93°; analysis; [a]D - 30°; molecular refraction). A comparison with guaiol from guaiac wood oil confirmed the identity. In the liquid oil free acids, more particularly formic and acetic acids, were found. Eyken also himself distilled the oil from a wood which he regards as possibly derived from a species of juniper. The oil (yield 1,3 p. c.) soon solidified, but, contrary to the oil first examined, contained no fractions below the boiling point of guaiol. The fractions with a higher boiling point than guaiol also remained liquid and hence rendered its isolation more difficult. In spite of these differences, Eyken regards both oils as identical and attributes the variations to the fact that one oil had stood for several years whereas the other was a fresh distillate.
The same wood was later examined by W. G. Boorsma-). It revealed the structure of the wood common to the junipers, but its species could not be identified. The wood, deprived of its oil by steam distillation, yields upon extraction with ether 5 p. c. of an amorphous mass which burns with an aromatic odor.
Another aromatic wood is the Kaju kasturi 3), which is derived from a species of Juniperus or some other conifer. The heart-wood is reddish to dark red, the sap wood white. Upon distillation the red wood yielded a light yellow oil with a guaiol-like odor. Inasmuch as Boorsma could not cause it to crystallize he regarded it as free from guaiol.
Denboek voor Nederlandsch Indie, Amsterdam 1909, p. 170) Kajoe gaharoe is the Malay name for Aquilaria malaccensis, Lam. (Kajoe = wood). The wood, with or without frankincense, is used as incense by the natives. For Aquilaria malaccensis many other designations are current which, however, apparently are also used for Gonystylus Miquelianus.
1) Recueil trav. chim. des P.-B. 25 (1906), 40, 44; Chem. Zentralbl. 190(5, I. 841.
2) Bulletin du Departement de l'Agriculture aux Indes Neerlandaises (Pharmacologic III.) 1907, Mo. 7, p. 37.
3) According to Clercq (loc. cit. p. 344) Kajoe kastoeri is the Malay name for the wood of Xanthophyllum adenopodum Miq. (Polygalaceae).