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Impurities and reference standards

4-Hydroxybenzaldehyde

Also known as p-Hydroxybenzaldehyde, 4-Formylphenol, p-Formylphenol

CAS 123-08-0Formula C7H6O2Molar mass 122.12 g/molEC 204-599-1
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4-Hydroxybenzaldehyde chemical structure, C7H6O2, CAS 123-08-0
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
123-08-0
Formula
C7H6O2
Molar mass
122.12 g/mol
Physical form
Powder
HS code
291249
Category
Impurities and reference standards
Illustrative photo, closed blue fibre drums on a pallet in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is 4-Hydroxybenzaldehyde?

Plain description, key identifiers and synonyms

4-hydroxybenzaldehyde is a hydroxybenzaldehyde that is benzaldehyde substituted with a hydroxy group at position C-4. It has a role as an EC 1.14.17.1 (dopamine beta-monooxygenase) inhibitor, a mouse metabolite and a plant metabolite.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
4-hydroxybenzaldehyde
CAS number
123-08-0 CAS number cross-checked
EC number
204-599-1
Molecular formula
C7H6O2
UNII
O1738X3Y38
MDL number
MFCD00006939
INCI name
HYDROXYBENZALDEHYDE
InChIKey
RGHHSNMVTDWUBI-UHFFFAOYSA-N
InChI
InChI=1S/C7H6O2/c8-5-6-1-3-7(9)4-2-6/h1-5,9H
SMILES (canonical and isomeric)
C1=CC(=CC=C1C=O)O

Synonyms

  • p-Hydroxybenzaldehyde
  • 4-Formylphenol
  • p-Formylphenol
  • Benzaldehyde, 4-hydroxy-
  • p-Oxybenzaldehyde
  • Parahydroxybenzaldehyde
  • Para-Hydroxybenzaldehyde
  • 4-Hydroxy benzaldehyde
  • Benzaldehyde, p-hydroxy-
  • 4-Hydroxy-benzaldehyde
  • USAF M-6
  • Bisoprolol EP Impurity S
  • 4-formyl-phenol
  • 4-hydoxybenzaldehyde
  • p-hydroxy benzaldehyde
  • p-Hydroxy-benzaldehyde
  • 4-Hydroxybenzenecarbonal
  • 4-formyl phenol
  • p-Hydroxybenzaldehyde, Pract.
  • 4-hydroxybenz
  • Para-hydroxy benzaldehyde
  • p-OH-benzaldehyde
  • 4hydroxybenzaldehyde
  • p-hydroxibezaldehyde
  • p-hydroxybenzaldehye
Show all 37 synonyms
  • 4-Hydroxybenzaldehyde, Bisoprolol Fumarate Imp. S (EP), Bisoprolol Imp. S (EP), Bisoprolol Fumarate Impurity S, Bisoprolol Impurity S
  • 4-hydroxybenzaldehyd
  • 4-hydroxybezaldehyde
  • 4-Hydroxybenzaldehye
  • 4-hydroxibenzaldehyde
  • 4-hydroxylbenzaldehyde
  • 4--hydroxybenzaldehyde
  • p-hydroxyl benzaldehyde
  • 4-hydroxyl benzaldehyde
  • Safinamide impurity 02
  • 4-hydroxy- benzaldehyde
  • PYRILAMINE_met038

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Physical form
Powderexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
122.12 g/molcalc.
Exact mass
122.0368 Dacalc.
LogP (octanol/water)
1.2calc.
Topological polar surface area
37.3 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
1calc.
Heavy atoms
9calc.
Rings
1calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, c1ccccc1

c1ccccc1

1 ring, 6 atoms, the Benzene ring system.

485,677 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

4-Hydroxybenzaldehyde suppliers

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All 128 suppliers
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Where suppliers are based

128 suppliers in 14 countries

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4-Hydroxybenzaldehyde price

Indicative price range per kg from live supplier offers

No published prices right now

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Uses and applications

What the substance is used for, by industry and function

Industrial uses: Intermediate.

Cosmetic ingredient, INCI name HYDROXYBENZALDEHYDE(fragrance, perfuming)

Roles

  • animal metabolite
  • enzyme inhibitor
  • eukaryotic metabolite
  • mammalian metabolite
  • metabolite
  • mouse metabolite
  • plant metabolite

Functional uses

  • Flavouring and nutrient
  • Fragrance

Cosmetic functions

  • Fragrance
  • Perfuming

Regulatory status

Inventories, regulations and trade controls that list this substance

Health and food

  • EU cosmetic ingredient inventory

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code 4-Hydroxybenzaldehyde is traded under.

HS 2912.49Indicative HS code

Aldehyde-alcohols, aldehyde-ethers, aldehyde-phenols and aldehydes with other oxygen…

World exports in 2024
$159M
−9.6% vs 2023, imports $171M
2019 to 2024
Top exporters
  1. China36.7%
  2. India * partner reported27.5%
  3. Germany13.9%
Top importers
  1. China16.0%
  2. United States15.7%
  3. India * partner reported9.6%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for 4-Hydroxybenzaldehyde is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about 4-Hydroxybenzaldehyde, based on the data on this page

What is 4-Hydroxybenzaldehyde?

4-hydroxybenzaldehyde is a hydroxybenzaldehyde that is benzaldehyde substituted with a hydroxy group at position C-4. It has a role as an EC 1.14.17.1 (dopamine beta-monooxygenase) inhibitor, a mouse metabolite and a plant metabolite.

What is the CAS number of 4-Hydroxybenzaldehyde?

The CAS registry number of 4-Hydroxybenzaldehyde is 123-08-0.

What is the molecular formula and weight of 4-Hydroxybenzaldehyde?

The molecular formula of 4-Hydroxybenzaldehyde is C7H6O2 and its molar mass is 122.12 g/mol.

What is 4-Hydroxybenzaldehyde used for?

Industrial uses: Intermediate.

Is 4-Hydroxybenzaldehyde hazardous?

No GHS hazard classification for 4-Hydroxybenzaldehyde is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of 4-Hydroxybenzaldehyde?

4-Hydroxybenzaldehyde is usually classified under HS code 291249 (Aldehyde-alcohols, aldehyde-ethers, aldehyde-phenols and aldehydes with other oxygen…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy 4-Hydroxybenzaldehyde?

CompoundList lists 128 suppliers of 4-Hydroxybenzaldehyde in China, India, United States, Germany and 10 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy 4-Hydroxybenzaldehyde in India?

21 suppliers in India list 4-Hydroxybenzaldehyde on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of 4-Hydroxybenzaldehyde?

Suppliers quote 4-Hydroxybenzaldehyde on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle 4-Hydroxybenzaldehyde

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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