Lesson plan
Calone
Calone or methylbenzodioxepinone, trade-named Calone 1951, is an organic compound with the formula . A white solid, it is a derivative of 4-methylcatechol. In the fragrance industry it is known as "watermelon ketone" or simply "calone". It was discovered by Pfizer in 1966. It is used to give the olfactory impression of a fresh seashore through the marine and ozone nuances (specifically, as fresh, watery, clean, melon, green, marine, and ozone). Calone is similar in structure to brown algae pheromones like ectocarpene and is also distantly related in structure to the drug diazepam. Calone is an unusual chemical compound which has an intense "sea-breeze" note with slight floral and fruit overtones. It has been used as a scent component since the 1980s for its watery, fresh, ozone accords, and as a more dominant note in several perfumes of the marine trend, beginning in the 1990s. In 2014, Plummer et al. reported the synthesis and fragrance properties of several related aliphatic analogues. Swiss company Firmenich later released the isopropyl homologue of this substance under the brand name Cascalone - a sweet, watery version of calone with a transparent floral signature.
Article summary
Calone or methylbenzodioxepinone, trade-named Calone 1951, is an organic compound with the formula . A white solid, it is a derivative of 4-methylcatechol. In the fragrance industry it is known as "watermelon ketone" or simply "calone". It was discovered by Pfizer in 1966. It is used to give the olfactory impression of a fresh seashore through the marine and ozone nuances (specifically, as fresh, watery, clean, melon, green, marine, and ozone). Calone is similar in structure to brown algae pheromones like ectocarpene and is also distantly related in structure to the drug diazepam. Calone is an unusual chemical compound which has an intense "sea-breeze" note with slight floral and fruit overtones. It has been used as a scent component since the 1980s for its watery, fresh, ozone accords, and as a more dominant note in several perfumes of the marine trend, beginning in the 1990s. In 2014, Plummer et al. reported the synthesis and fragrance properties of several related aliphatic analogues. Swiss company Firmenich later released the isopropyl homologue of this substance under the brand name Cascalone - a sweet, watery version of calone with a transparent floral signature.
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Discussion questions
- Summarise the article in your own words. Which single claim would you verify first, and why?
- Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
- If two sources disagreed about one of these facts, what would you need in order to trust one over the other?
Bibliography
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Key claims and bibliography are generated from the same tracked claims and sources as the article page.