| Art No | Description | Grade | Packing |
| UN0001 | Undecyleic Acid | EP | 500ml |
| UN0002 | n-Undecane 十一烷 | GR | 50g |
| UR0001 | Uracil 環丙烯醯尿 | EP | 25g |
| UR0001A | Uracil 環丙烯醯尿 | EP | kg |
| ** | Uranine see: Flrorescein | ||
| UR0002# | Uranyl Acetate 醋酸鈾 | GR | 25g |
| UR0006 | Uranyl Magnesium Acetate 醋酸鎂鈾 | GR | 25g |
| UR0008 | Uranyl Nitrate 硝酸鈾 | EP | 25g |
| UR0009 | Uranyl Sulfate 硫酸鈾 | EP | 25g |
| UR0007 | Uranyl Zinc Acetate 醋酸鋅鈾 | EP | 25g |
| UR0003 | Urea 尿素 | EP | 500g |
| ** | 5-Ureidohydantion see: Allantoin | ||
| ** | Urethane see: Ethyl Carbamate | ||
| UR0005 | Uric Acid 尿酸 | GR | 25g |
| ** | Urotropin see: Hexamethyleneteramine |
