5-Hydroxy-1-methyl-1H-pyrazole-3-carboxylic acid methyl ester
[CAS# 51985-95-6]

Identification

• Name: 5-Hydroxy-1-methyl-1H-pyrazole-3-carboxylic acid methyl ester
• Synonyms: Methyl 5-hydroxy-1-methyl-1H-pyrazole-3-carboxylate; Methyl 5-hydroxy-1-methyl-3-pyrazolecarboxylate; NSC 338308
• Molecular Formula: C₆H₈N₂O₃
• Molecular Weight: 156.14
• CAS Registry Number: 51985-95-6
• EC Number: 692-220-4

Properties

• Solubility: Slightly soluble (8.6 g/L) (25 °C), Calc.^*
• Density: 1.35±0.1 g/cm³ (20 °C 760 Torr), Calc.^*
• Melting point: 195 °C (methanol )^**

^* Calculated using Advanced Chemistry Development (ACD/Labs) Software V11.02 (©1994-2015 ACD/Labs)

^** Sucrow, Wolfgang

Safety Data

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Acute toxicity	Acute Tox.	4	H312
Eye irritation	Eye Irrit.	2	H319
Acute toxicity	Acute Tox.	4	H302
Acute toxicity	Acute Tox.	4	H332
Skin irritation	Skin Irrit.	2	H315
Specific target organ toxicity - single exposure	STOT SE	3	H335