Symbol | Description |
Default (single or aromatic) | |
- |
Single bond (not aromatic) |
= |
Double bond (not aromatic) |
# |
Triple bond |
~ |
Any bond (wildcard) |
: |
Aromatic bond |
@ |
Ring bond |
/ |
Directional single ``up'' bond |
"¨ | Directional single ``down'' bond |
/? |
Directional ``up'' or unspecified |
"¨? |
Directional ``down'' or unspecified |