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#chemistry

11 posts11 participants0 posts today
Resolviendo la incógnita 🌐
Public

Tapputi-Belatekallim y (—)-ninu fueron las primeras químicas conocidas de la historia. Trabajaron de perfumistas en el palacio real de Tukulti-Ninurta I el año 1239 a.C. Su tablilla presenta una fórmula de destilación de plantas para hacer perfumes.🏛️ Museo del Antiguo Oriente Próximo 📷Iniciativa de Biblioteca Digital Cuneiforme (CDLI) #mesopotamia #quimica #chemistry

Cowboy Cat Ranch
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Hmmm... Isn't trimethylamine 5-amino valeric acid (CAS #660-88-8) one single compound, instead of two (see top and bottom of the list)? The author claims trimethylamine is a fatty acid. Again, hmmm... Any chemists who can comment on this?

Also, anyone any idea what the IUPAC name or CAS # for "5b-cholestan acid 3b-ol" is?

ScienceCommunicator
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Everything changes, albeit at varying rates. For example, whilst some aspects of scientific knowledge change, a % of that knowledge is fundamental. The #geochemical carbon cycle is an example of how the element carbon moves from the reservoirs; atmospheric, living things, surface & deep ocean, ocean sediment & rock, over periods of time ranging from seconds to millions of years.