| ?Number | Name | Structural | CAS | Quality standard |
|---|
| 1 | 2,4-Dichloro-5-fluorobenzoyl chloride
| 
| ?86393-34-2 | off-white solid purity≥98% |
| 2 | (E)-ethyl 3-(dimethylamino)acrylate | 
| 924-99-2(1117-37-9) | colorless liquid purity≥99% |
| 3 | (E)-methyl 3-(dimethylamino)acrylate | 
| 999-59-720664-47-5 | light yellow solid purity≥99% |
| 4 | ethyl 2,4-dichloro-α-[(dimethylamino)methylene]
-5-fluoro-β-oxobenzenepropanoate | 
| 105392-20-9 | white solid purity≥99% |