Rank six carbon-based groups by CIP priority

Ordem correta, de lowest priority a highest priority

1. –CH₂CH₃

   First carbon carries (C, H, H): only one carbon substituent.

2. –CH(CH₃)₂

   First carbon carries (C, C, H), the same set as vinyl, but its branches are CH₃ groups carrying only (H, H, H).

3. –CH=CH₂

   First carbon carries (C, C, H) counting the duplicate; at the next sphere its CH₂ carries (C, H, H), which beats the (H, H, H) of the isopropyl methyls.

4. –C(CH₃)₃

   First carbon carries (C, C, C), which beats the (C, C, H) of vinyl and isopropyl.

5. –C≡CH

   First carbon also carries (C, C, C); at the next sphere its real CH carries (C, C, H) from its duplicates, beating the (H, H, H) of a tert-butyl methyl.

6. –CH₂OH

   First carbon carries (O, H, H). The first point of difference is the highest atom of each set, and O beats C, so one oxygen outranks three carbons.