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captan

n. 1 A particular phthalimide fungicide. 2 ethyl mercaptan

Wikipedia
Captan
''This article is about the fungicide captan. Captan is also the common name for ethanethiol or ethyl mercaptan, used as an odorant for natural gas and liquid propane delivery to help identify leaks.

Captan is the name of a general use pesticide (GUP) that belongs to the phthalimide class of fungicides. Though it can be applied on its own, Captan is often added as a component of other pesticide mixtures. It is used to control diseases on a number of fruits and vegetables as well as ornamental plants. It also improves the outward appearance of many fruits, making them brighter and healthier-looking. Captan is utilized by both home and agricultural growers and is often applied during apple production.