Pentamethylcyclopentadiene

Rarity: Common

The most frequent rarity: most Wikipedia articles become Commons.

Rarity follows how well known the article is: its views on the French and English Wikipedia over a year, and the number of languages it exists in.

At a glance

Class

Notion

Domain

Science and technology

In collections

Nobody has pulled it yet.

What Wikipedia says

1,2,3,4,5-Pentamethylcyclopentadiene is a cyclic diene with the formula C5(CH3)5H, often written C5Me5H, where Me is CH3. It is a colorless liquid.

Excerpt from the Wikipedia article “Pentamethylcyclopentadiene”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Minihaa, Public domain, via Wikimedia Commons.