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| Product name | 4-Nitro-o-phenylenediamine |
| CAS No. | 99-56-9 |
| Molecular formula | C6H7N3O2 |
| Molecular weight | 153.1387g/mol |
| Structural formula | ![]() |
| Appearance | Light yellow to brown powder |
| Assay | ≥98% |
| Uses | Hair dye intermediates |

