4-ethoxycarbonyl-3-ethoxyphenylacetic Acid and Its Isomers Test Report on Ultisil XB-C18
Solution of main component
| Column | Welch Ultisil® XB-C18 4.6×250mm，5μm (P/N: 00201-31043) |
| Mobile Phase | 0.1% phosphoric acid aqueous solution / 10% tetrahydrofuran in methanol solution = 55/45 |
| Detector | 215nm |
| Temperature | 30℃ |
| Flow Rate | 1ml/min |
| Injection Volume | 10ul |