| Chemical Name. | Reactive Brown 9 |
| C.I. No. | – |
| CAS No. | 12225-66-0 |
| Synonyms. | Reactive Red Brown K-B3R, Reactive Red Brown KM-B3R, Reactive Red Brown H4R |
| Molecular Formula | C28H20ClN7Na2O12S3 |
| Molecular Weight | 824.13 |
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