PRODUCTS > Biological stain
| Product name | CAS NO. | Grade |
| Sudan III | 85-86-9 | Biological stain |
| Sudan IV | 85-83-6 | Biological stain |
| Acid Chromate Blue K | 3270-25-5 | Biological stain |
| Brilliant green | 633-03-4 | Biological stain |
| Catechol vloiet | 115-41-3 | Biological stain |
| Naphthol green B | 19381-50-1 | Biological stain |
| Phenol red，sodium salt | 34487-61-1 | Biological stain |
| Vanillin | 121-33-5 | Biological stain |
| Coumarin | 91-64-5 | Biological stain |
| 1-(2-Pyridylazo)-2-naphthol | 85-85-8 | Biological stain |