Fringe : Season 3 : Episode 7 : “The Abducted”
Say his name three times, and he’ll be back. After chasing down a child abductor, Olivia manages to get a message through to Earth-1 and thus sets up some kind of confrontation-cum-rescue mission for the rest of the season.
Seems like the Fringe Division portable fingerprint scanners are also gas chromatographs and mass spectrometers – how else could Agent Lee have identified sucrose so easily? Incidentally, the equivalent Earth-1 technology is considered “portable” when it fits into the back of a light truck.
The molecule spinning behind Walternate’s head when he’s on the phone to Broyles-2 may or may not be Cortexiphan (presumably they analysed what they found in Olivia’s head), but its structure must have been extremely awkward to solve (perhaps Earth-2 has more advanced NMR technology as well). It appears to be some kind of dimeric imidazoline–piperazine fused ring, similar to an unsaturated, dimeric version of purine with lots of functional groups. I’m not sure which colours on the diagram represent which atoms, but a tentative interpretation would be: