Site icon Master Organic Chemistry

9 Nomenclature Conventions To Know

Chemical nomenclature can be frustrating to learn. It’s a series of conventions which have been patched together over a long period of time, some of which date back to the 19th century. The language contains archaic terms that are past their useful prime, but are lodged deeply in the language of chemistry and almost impossible to excise at this point.  The point of this article is to go beyond the common terms cis, trans, (E,Z), (S,R) – which are an absolute must to know – to point out some of the less frequently encountered aspects of nomenclature which might make you furrow your brow and say – “what does that mean?”

1. Bracket notation.

2. n-, s-, and t-

3. The N- prefix

4. L and D

5. (+) and (–)

6. Vicinal and Geminal (vic– and gem-)

7. Methyl, methylene, methine

8. Alpha and beta (α/β)

9. Erythro and threo

Questions, comments, anything missing – as always, I want to hear about it.

Related Posts:

Exit mobile version