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Impurities and reference standards

Phthalaldehydic acid

Also known as 2-Carboxybenzaldehyde, 2-Formylbenzoic acid, Benzoic acid, 2-formyl-

CAS 119-67-5Formula C8H6O3Molar mass 150.13 g/molEC 204-342-3
GHS signal word: Warning. Pictograms: Harmful or irritant 20 suppliers listed
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Phthalaldehydic acid chemical structure, C8H6O3, CAS 119-67-5
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
119-67-5
Formula
C8H6O3
Molar mass
150.13 g/mol
EC number
204-342-3
HS code
291830
Category
Impurities and reference standards

What is Phthalaldehydic acid?

Plain description, key identifiers and synonyms

2-formylbenzoic acid is an aldehydic acid which consists of benzoic acid substituted by a formyl group at position 2. Metabolite of ampicillin phthalidyl ester. It has a role as a drug metabolite, a mouse metabolite and a bacterial xenobiotic metabolite. It is a member of benzaldehydes and an aldehydic acid. It is a conjugate acid of a 2-formylbenzoate.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2-formylbenzoic acid
CAS number
119-67-5 CAS number cross-checked
EC number
204-342-3
Molecular formula
C8H6O3
UNII
OAEGSO7G3Y
MDL number
MFCD00003336
InChIKey
DYNFCHNNOHNJFG-UHFFFAOYSA-N
InChI
InChI=1S/C8H6O3/c9-5-6-3-1-2-4-7(6)8(10)11/h1-5H,(H,10,11)
SMILES (canonical and isomeric)
C1=CC=C(C(=C1)C=O)C(=O)O

Synonyms

  • 2-Carboxybenzaldehyde
  • 2-Formylbenzoic acid
  • Benzoic acid, 2-formyl-
  • o-Formylbenzoic acid
  • o-Carboxybenzaldehyde
  • 4-10-00-02748 (Beilstein Handbook Reference)
  • 2-Formyl benzoic acid
  • 2-Formyl benzoic acid (usp impurity)
  • Benzoic acid, formyl-
  • Benzaldehyde-2-carboxylic Acid
  • 2-formyl-benzoic acid
  • 2-Carboxybenzaldehyde, 97%
  • Phthalaldehydsure
  • formylbenzoic acid
  • carboxybenzaldehyde
  • Phthalaldehydic Acid, 2-Formylbenzoic Acid, NSC 5045, o-Carboxybenzaldehyde, o-Formylbenzoic Acid
  • 2- carboxybenzaldehyde
  • 2-carboxy-benzaldehyde

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

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

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
150.13 g/molcalc.
Exact mass
150.0317 Dacalc.
LogP (octanol/water)
1.2calc.
Topological polar surface area
54.37 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
2calc.
Heavy atoms
11calc.
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

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
Precautionary statements (16)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

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

Full safety data and first aid

Phthalaldehydic acid suppliers

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All 20 suppliers
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Where suppliers are based

20 suppliers in 8 countries

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Phthalaldehydic acid price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Roles

  • animal metabolite
  • bacterial metabolite
  • bacterial xenobiotic metabolite
  • drug metabolite
  • eukaryotic metabolite
  • human metabolite
  • human xenobiotic metabolite
  • mammalian metabolite
  • metabolite
  • mouse metabolite
  • prokaryotic metabolite
  • xenobiotic metabolite

Regulatory status

Inventories, regulations and trade controls that list this substance

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 Phthalaldehydic acid is traded under.

HS 2918.30Indicative HS code

Carboxylic acids with aldehyde or ketone function but without other oxygen function…

World exports in 2024
$813M
−39.8% vs 2023, imports $1.23B
2019 to 2024
Top exporters
  1. China43.3%
  2. India * partner reported10.4%
  3. United States6.8%
Top importers
  1. Singapore33.1%
  2. Germany7.2%
  3. Japan6.9%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

Quick answers about Phthalaldehydic acid, based on the data on this page

What is Phthalaldehydic acid?

2-formylbenzoic acid is an aldehydic acid which consists of benzoic acid substituted by a formyl group at position 2. Metabolite of ampicillin phthalidyl ester. It has a role as a drug metabolite, a mouse metabolite and a bacterial xenobiotic metabolite. It is a member of benzaldehydes and an aldehydic acid.

What is the CAS number of Phthalaldehydic acid?

The CAS registry number of Phthalaldehydic acid is 119-67-5.

What is the molecular formula and weight of Phthalaldehydic acid?

The molecular formula of Phthalaldehydic acid is C8H6O3 and its molar mass is 150.13 g/mol.

What is Phthalaldehydic acid used for?

Known uses and roles of Phthalaldehydic acid include animal metabolite, bacterial metabolite, bacterial xenobiotic metabolite, drug metabolite, eukaryotic metabolite and 7 more.

Is Phthalaldehydic acid hazardous?

Phthalaldehydic acid carries the GHS signal word "Warning". Main hazards: causes skin irritation, causes serious eye irritation, may cause respiratory irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Phthalaldehydic acid?

Phthalaldehydic acid is usually classified under HS code 291830 (Carboxylic acids with aldehyde or ketone function but without other oxygen function…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Phthalaldehydic acid?

CompoundList lists 20 suppliers of Phthalaldehydic acid in China, Canada, Czech Republic, Germany and 4 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Phthalaldehydic acid in India?

1 supplier in India list Phthalaldehydic acid on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Phthalaldehydic acid?

Suppliers quote Phthalaldehydic acid 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 Phthalaldehydic acid

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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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