| # | Clue | Answer As Given | Value | Round | Category | Air Date | Show |
|---|---|---|---|---|---|---|---|
| Experimenting with coal tar in the 1870s, Constantin Fahlberg accidentally discovered this sugar substitute | saccharin | $800 | DJ | SCIENTIFIC DISCOVERIES | 2014-04-14 | #6816 | |
| Experiments with coal tar derivatives led to the accidental discovery of this artificial sweetener in 1879 | saccharin | $800 | DJ | SCIENTIFIC DISCOVERIES | 1994-07-07 | #2284 |