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Aromatic building blocks

3-Phthalimidopropionic acid

Also known as 3-Phthalimidopropanoic acid, Phthalyl-beta-alanine, N-Phthaloyl-beta-alanine

CAS 3339-73-9Formula C11H9NO4Molar mass 219.20 g/molEC 222-083-4
GHS signal word: Danger. Pictograms: Corrosive, Acute toxicity (severe), Harmful or irritant 10 suppliers listed
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3-Phthalimidopropionic acid chemical structure, C11H9NO4, CAS 3339-73-9
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
3339-73-9
Formula
C11H9NO4
Molar mass
219.20 g/mol
EC number
222-083-4
HS code
292519
Category
Aromatic building blocks

What is 3-Phthalimidopropionic acid?

Plain description, key identifiers and synonyms

3-Phthalimidopropionic acid is a chemical substance with the molecular formula C11H9NO4 and a molar mass of 219.20 g/mol. Its CAS registry number is 3339-73-9. The IUPAC name is 3-(1,3-dioxoisoindol-2-yl)propanoic acid.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
3-(1,3-dioxoisoindol-2-yl)propanoic acid
CAS number
3339-73-9 CAS number cross-checked
EC number
222-083-4
Molecular formula
C11H9NO4
UNII
O5UY4ERZ0T
MDL number
MFCD00023096
InChIKey
DXXHRZUOTPMGEH-UHFFFAOYSA-N
InChI
InChI=1S/C11H9NO4/c13-9(14)5-6-12-10(15)7-3-1-2-4-8(7)11(12)16/h1-4H,5-6H2,(H,13,14)
SMILES (canonical and isomeric)
C1=CC=C2C(=C1)C(=O)N(C2=O)CCC(=O)O

Synonyms

  • 3-Phthalimidopropanoic acid
  • Phthalyl-beta-alanine
  • N-Phthaloyl-beta-alanine
  • 3-(1,3-Dioxo-1,3-dihydro-2H-isoindol-2-yl)propanoic acid
  • 1,3-Dihydro-1,3-dioxo-2H-isoindole-2-propionic acid
  • beta-phthalimidopropionic acid
  • beta-Alanine,phthalolyl
  • Phthalimido-beta-alanine
  • 3-(1,3-Dihydro-1,3-dioxo-2H-isoindol-2-yl)propanoic acid
  • 3-Phthalimidoylpropionic acid
  • beta-alanine, N-phthaloyl-
  • 1,3-Dihydro-1,3-dioxo-2H-isoindole-2-propanoic acid
  • beta-(N-phthalimido)propionic acid
  • 1,3-Dioxo-2-isoindolinepropionic acid
  • 2-Isoindolinepropionic acid, 1,3-dioxo-
  • 3-(1,3-Dioxo-1,3-dihydroisoindol-2-yl)propionic acid
  • 3-(1,3-Dioxoisoindolin-2-yl)propanoic acid
  • 2H-Isoindole-2-propanoic acid, 1,3-dihydro-1,3-dioxo-
  • 3-(1,3-dioxoisoindol-2-yl)propanoic acid
  • N-Phthaloyl-|A-alanine
  • 3-(1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl)propanoic acid
  • Polaprezinc Impurity 1
  • 3-phthalimido-propionic acid
  • PHT-BETA-ALA-OH
  • 3-(1,3-dioxobenzo[c]azolin-2-yl)propanoic acid
Show all 31 synonyms
  • b-Phthalimidopropionic acid
  • Phthaloyl-beta-alanine
  • 3-(1,3-Dioxo-1,3-dihydro-2H-isoindol-2-yl)-propanoic acid
  • 3-Phthal
  • PHT-B-ALA-OH
  • 3-Phtalimido-propanoic acid

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
219.20 g/molcalc.
Exact mass
219.0532 Dacalc.
LogP (octanol/water)
0.76calc.
Topological polar surface area
74.68 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
3calc.
Heavy atoms
16calc.
Rings
2calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.18calc.
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, O=C1NC(=O)c2ccccc21

O=C1NC(=O)c2ccccc21

2 rings, 11 atoms, the Phthalimide ring system.

2,700 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS05: Corrosive
Corrosive
GHS06: Acute toxicity (severe)
Acute toxicity (severe)
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H301Toxic if swallowed.
  • H315Causes skin irritation.
  • H318Causes serious eye damage.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
Precautionary statements (21)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P270Do not eat, drink or smoke when using this product.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P316If swallowed: Get emergency medical help immediately.
  • 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.
  • P305 + P354 + P338If in eyes: Immediately rinse with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P317Get medical help.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • 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

3-Phthalimidopropionic acid suppliers

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Where suppliers are based

10 suppliers in 6 countries

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3-Phthalimidopropionic 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

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code 3-Phthalimidopropionic acid is traded under.

HS 2925.19Indicative HS code

Imides and their derivatives, salts thereof, other

World exports in 2024
$295M
+11.7% vs 2023, imports $348M
2019 to 2024
Top exporters
  1. China29.7%
  2. Japan22.7%
  3. United Kingdom10.0%
Top importers
  1. United States12.7%
  2. Brazil12.6%
  3. China10.5%
Reported customs values in USD, not prices.Full trade data

The HS code shown for 3-Phthalimidopropionic acid is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about 3-Phthalimidopropionic acid, based on the data on this page

What is 3-Phthalimidopropionic acid?

3-Phthalimidopropionic acid is a chemical substance with the molecular formula C11H9NO4 and a molar mass of 219.20 g/mol. Its CAS registry number is 3339-73-9. The IUPAC name is 3-(1,3-dioxoisoindol-2-yl)propanoic acid.

What is the CAS number of 3-Phthalimidopropionic acid?

The CAS registry number of 3-Phthalimidopropionic acid is 3339-73-9.

What is the molecular formula and weight of 3-Phthalimidopropionic acid?

The molecular formula of 3-Phthalimidopropionic acid is C11H9NO4 and its molar mass is 219.20 g/mol.

What is 3-Phthalimidopropionic acid used for?

Known uses and roles of 3-Phthalimidopropionic acid include building blocks in research and laboratory and screening compounds in research and laboratory.

Is 3-Phthalimidopropionic acid hazardous?

3-Phthalimidopropionic acid carries the GHS signal word "Danger". Main hazards: toxic if swallowed, causes skin irritation, causes serious eye damage. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of 3-Phthalimidopropionic acid?

3-Phthalimidopropionic acid is usually classified under HS code 292519 (Imides and their derivatives, salts thereof, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy 3-Phthalimidopropionic acid?

CompoundList lists 10 suppliers of 3-Phthalimidopropionic acid in China, United States, Hong Kong, Netherlands and 2 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of 3-Phthalimidopropionic acid?

Suppliers quote 3-Phthalimidopropionic 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 3-Phthalimidopropionic 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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