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| IUPAC Name: | 2-methylpyrazole-3,4-diaminesulfuric acid |
| Description: | 1-Methyl-1H-pyrazole-4,5-diamine sulfate is used as a coupling reagent in synthetic hair dye products. |
| Molecular Weight: | 210.21 |
| Molecular Formula: | C4H10N4O4S |
| Canonical SMILES: | CN1C(=C(C=N1)N)N.OS(=O)(=O)O |
| InChI: | InChI=1S/C4H8N4.H2O4S/c1-8-4(6)3(5)2-7-81-5(2,3)4/h2H,5-6H2,1H3(H2,1,2,3,4) |
| InChI Key: | CIMLJTZGZLWBJY-UHFFFAOYSA-N |
| Melting Point: | >198.5°C (dec.) |
| Solubility: | DMSO (Slightly), Methanol (Slightly, Heated) |
| Appearance: | Off-White to Pale Beige Solid |
| Storage: | -20°C, Hygroscopic |
| References: | Clausen, T., et al. Preparation of Diaminopyrazole Derivatives for Oxidative Hair Dyes. Ger. Offen. 3843892. Jun 28. 1990.. |
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