Pseudouridine

Formula : C9-H12-N2-O6
CAS : 1445-07-04 

A naturally-occurring isomer of URIDINE found in RNA, in which ribosyl is attached to a carbon instead of a nitrogen atom.

Pseudoverdin

Formula :
CAS : 150624-46-7 

From Pseudomonas aeruginosa ATCC 15692 (PAO1 strain).