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CAS 20055-01-0

CAS 20055-01-0 matches 1 EU annex record across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 20055-01-0
CAS 20055-01-0PubChem CID 21904571

1H-Pyrazole, 4,5-diamine-1-methyl-, sulfate (1:1)

IUPAC name
1-methylpyrazole-4,5-diamine;sulfuric acid
Molecular formula
C4H10N4O4S
Molecular weight
210.21 g/mol
Exact mass
210.04227599 Da
Topological polar surface area
153.0 Ų
Hydrogen-bond donors
4
Hydrogen-bond acceptors
7
Covalent units
2
Defined stereocentres
0

Also known as

RefChem:438943836-860-61-Methyl-1H-pyrazole-4,5-diamine sulfate2-methylpyrazole-3,4-diamine;sulfuric acid4,5-diamino-1-methylpyrazole sulfate1H-Pyrazole-4,5-diamine, 1-methyl-, sulfate (1:1)1-Methyl-1H-pyrazole-45-diamine sulfate1-methyl-1H-pyrazole-4,5-diamine; sulfuric acid
11 more reported names
4,5-Diamino-1-methylpyrazole Sulfate; 4,5-Diamino-1-methylpyrazole Hydrosulfate1H-Pyrazole-4,5-diamine, 1-methyl-, sulfate1H-Pyrazole-4,5-diamine,DS-86541-Methyl-1H-pyrazole-4,5-diaminesulfateDA-219992-methylpyrazole-3,4-diamine; sulfuric acidCS-0080159EN300-3671474,5-diamino-1-methylpyrazole sulfuric acid salt1-Methyl-1H-pyrazole-4,5-diamine sulfate (1:1)
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Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 20055-01-0

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How CAS 20055-01-0 is used on this site

CAS 20055-01-0 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 1 EU annex record shares this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.

Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 20055-01-0 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.