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729000

Sigma-Aldrich

1-Methyl-1H-pyrazole-5-carboxaldehyde

96%

Synonym(s):

1-Methylpyrazole-5-carbaldehyde, 2-Methyl-2H-pyrazole-3-carbaldehyde

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About This Item

Empirical Formula (Hill Notation):
C5H6N2O
CAS Number:
27258-33-9
Molecular Weight:
110.11
MDL number:
MFCD03419801
UNSPSC Code:
12352100
PubChem Substance ID:
329764447

Assay

96%

form

liquid

refractive index

n20/D 1.521

density

1.118 g/mL at 25 °C

SMILES string

Cn1nccc1C=O

InChI

1S/C5H6N2O/c1-7-5(4-8)2-3-6-7/h2-4H,1H3

InChI key

RAJRANFZSWDUJZ-UHFFFAOYSA-N

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H302,H315,H317,H319,H335

Hazard Classifications

Acute Tox. 4 Oral - Eye Irrit. 2 - Skin Irrit. 2 - Skin Sens. 1 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

10 - Combustible liquids

WGK

WGK 3

Flash Point(F)

151.9 °F

Flash Point(C)

66.6 °C

Certificates of Analysis (COA)

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