Isol. from volatiles of Coriandrum sativum (coriander), Anethum sowa (Indian dill), Cuminum cyminum (cumin), Daucus carota (carrot), Nigella sativa (black cumin), Apium graveolens (celery), Pimpinella anisum (anise) and Petroselinum sativum (parsley) [CCD] Found in umbelliferous seed oils e.g. major constit. of oils of parsley, ivy, fennel, celery and others [DFC] Minor constit. of plant oils. Constit. of milk fat and from porcine parasites Oesophagostomum dentatum and Oesophagostomum quadrispinulatum [CCD]
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