| Item No. | Chemical Name | CAS No. | Structure | Typical Usage | CN Name |
| 1 | 4-Chlorobenzaldehyde | 104-88-1 |  |
对氯苯甲醛 | |
| 1 | 2,4-DiChlorobenzaldehyde | 874-42-0 |  |
2,4-二氯苯甲醛 |
4-Hydroxy TEMPO
| Item No. | Chemical Name | CAS No. | Structure | Typical Usage | CN Name |
| 1 | 4-Hydroxy-TEMPO; 4-hydroxy-2,2,6,6-tetramethyl piperidinyloxy | 60569-80-4 |  |
free radical |