Extended Data Fig. 1: 13C-detected HCF-TROSY pulse sequence used to correlate 1Hδ to 19F-attached 13Cζ.

90° pulses are denoted by narrow black rectangles and 180° pulses are denoted by wide black rectangles. Phase cycling and delay times are indicated. A 240 Hz CF coupling is assumed. The CH coupling was set to 20 Hz to maximize magnetization transfer.