| Name | CAS No. | Details |
| Litmus | 1393-92-6 | Details |
| Phenolphthalein | 77-09-8 | Details |
| o-Cresolphthalein | 596-27-0 | Details |
| Thymol | 89-83-8 | Details |
| Thymol blue | 76-61-9 | Details |
| Thymol blue sodium salt | 62625-21-2 | Details |
| Thymolphthalein | 125-20-2 | Details |
| Ninhydrin hydrate | 485-47-2 | Details |
| Phenol red | 143-74-8 | Details |
| Phenol red sodium salt | 34487-61-1 | Details |
| Sodium benzenolate | 139-02-6 | Details |
| Cresol Red | 1733-12-6 | Details |
| o-Cresol red sodium salt | 62625-29-0 | Details |
| Methyl thymol blue complexon | 1945-77-3 | Details |
| Methylthymol Blue tetrasodium salt | 1945-77-3 | Details |
| Methyl orange | 547-58-0 | Details |
| Methyl red | 493-52-7 | Details |
| Methyl red sodium salt | 845-10-3 | Details |
| Methyl blue | 28983-56-4 | Details |
| Ethyl Violet | 2390-59-2 | Details |