Naked Science Forum

Non Life Sciences => Chemistry => Topic started by: philthewineguy on 22/04/2021 19:09:57

Title: How do I label all the hydrogens and carbons on a tetracycline molecule please?
Post by: philthewineguy on 22/04/2021 19:09:57

Im having trouble labelling tetracycline with all the carbon and hydrogen sites. Im a bit of a newbie to Chemistry! Can anyone point me in the right direction of where I could find out how to label this molecule please?

Title: Re: How do I label all the hydrogens and carbons on a tetracycline molecule please?
Post by: Bored chemist on 22/04/2021 19:44:55

By convention, the rings are labeled A to D and the carbons are numbered... well, they are labeled confusingly.

https://en.wikipedia.org/wiki/Tetracycline_antibiotics

I'm not sure the tetracyclines are a good place to start learning chemistry

Title: Re: How do I label all the hydrogens and carbons on a tetracycline molecule please?
Post by: philthewineguy on 22/04/2021 19:57:46

Thank you. I can see where the 22 carbons are but cant see how there are 24 hydrogens

Title: Re: How do I label all the hydrogens and carbons on a tetracycline molecule please?
Post by: chiralSPO on 22/04/2021 20:09:27

The hydrogen atoms bonded to carbons are often omitted from the drawn structure, and are instead implied. This is the "bent line" representation or "skeleton formula"
https://en.wikipedia.org/wiki/Skeletal_formula

Title: Re: How do I label all the hydrogens and carbons on a tetracycline molecule please?
Post by: philthewineguy on 22/04/2021 20:25:04

Thank you. If im labelling all the hydrogen sites, I would just mark the hydrogens in the diagram instead of trying to draw 24 seperate ones?