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144088

Sigma-Aldrich

4-Hydroxybenzaldehyde

98%

Synonym(s):

4-Formylphenol, 4-Hydroxybenzaldehyde, Parahydroxybenzaldehyde, p-Formylphenol, p-Hydroxybenzaldehyde, p-Oxybenzaldehyde

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About This Item

Linear Formula:
HOC6H4CHO
CAS Number:
123-08-0
Molecular Weight:
122.12
Beilstein/REAXYS Number:
471352
EC Number:
204-599-1
MDL number:
MFCD00006939
UNSPSC Code:
12352100
PubChem Substance ID:
24848630
NACRES:
NA.22

Quality Level

200

assay

98%

form

solid

mp

112-116 °C (lit.)

SMILES string

[H]C(=O)c1ccc(O)cc1

InChI

1S/C7H6O2/c8-5-6-1-3-7(9)4-2-6/h1-5,9H

InChI key

RGHHSNMVTDWUBI-UHFFFAOYSA-N

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Application

4-Hydroxybenzaldehyde can be used as a reactant to synthesize:
  •  4-Hydroxybenzaldehydesemicarbazone by a condensation reaction with semicarbazide.    
  • Vanillin via bromination followed by copper-catalyzed coupling reaction with sodium methoxide.      
  • Oligo-4-hydroxybenzaldehyde by an oxidative polycondensation reaction with hydrogen peroxide (H2O2) in an alkaline medium.
  • (−)-Centrolobine, a diarylheptanoid.

pictograms

CorrosionExclamation mark
GHS05,GHS07

signalword

Danger

Hazard Classifications

Eye Dam. 1 - STOT SE 3

target_organs

Respiratory system

Storage Class

11 - Combustible Solids

wgk_germany

WGK 2

flash_point_f

345.2 °F

flash_point_c

174 °C

ppe

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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