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Aromatic building blocks

Phensuximide

Also known as Succitimal, Lifene, Milontin

CAS 86-34-0Formula C11H11NO2Molar mass 189.21 g/molEC 201-664-6
GHS signal word: Warning. Pictograms: Harmful or irritant 3 suppliers listed
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Phensuximide chemical structure, C11H11NO2, CAS 86-34-0
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
86-34-0
Formula
C11H11NO2
Molar mass
189.21 g/mol
EC number
201-664-6
HS code
292519
Category
Aromatic building blocks

What is Phensuximide?

Plain description, key identifiers and synonyms

Phensuximide is a member of pyrrolidines.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
1-methyl-3-phenylpyrrolidine-2,5-dione
CAS number
86-34-0 CAS number cross-checkedOther or deprecated CAS: 34367-67-4
EC number
201-664-6
Molecular formula
C11H11NO2
UNII
6WVL9C355G
MDL number
MFCD00072136
InChIKey
WLWFNJKHKGIJNW-UHFFFAOYSA-N
InChI
InChI=1S/C11H11NO2/c1-12-10(13)7-9(11(12)14)8-5-3-2-4-6-8/h2-6,9H,7H2,1H3
SMILES (canonical and isomeric)
CN1C(=O)CC(C1=O)C2=CC=CC=C2

Synonyms

  • Succitimal
  • Lifene
  • Milontin
  • Epimid
  • 1-methyl-3-phenylpyrrolidine-2,5-dione
  • Phensuximid
  • Milonton
  • Mirontin
  • 1-Methyl-3-phenyl-2,5-pyrrolidinedione
  • Fensuccimide
  • Phensuximidum
  • Fensuximida
  • Succinimide, N-methyl-2-phenyl-
  • 1-Methyl-3-Phenylsuccinimide
  • N-Methyl-alpha-phenylsuccinimide
  • 2,5-Pyrrolidinedione, 1-methyl-3-phenyl-
  • N-Methyl-3-phenylpyrrolidinedione
  • Phenylsuximide
  • phensuccimide
  • Fenosuccimide
  • Methylphenylsuccinimide
  • N-Methyl-2-phenylsuccinimide
  • racemic phensuximide
  • PM 334
  • 1-Methyl-3-phenylpyrrolidin-2,5-dione
Show all 31 synonyms
  • Epimid, Lifene, Milontin, Milonton
  • RS-Phensuximide
  • Milontin (TN)
  • (+-)-N-Methyl-2-phenylsuccinimide
  • (+/-)-N-Methyl-2-phenylsuccinimide
  • Phensuximide (USP/INN)

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
189.21 g/molcalc.
Exact mass
189.079 Dacalc.
LogP (octanol/water)
1.16calc.
Topological polar surface area
37.38 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
1calc.
Heavy atoms
14calc.
Rings
2calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.27calc.
Formal charge
0calc.
Stereocentres
1calc.
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=C1CC(c2ccccc2)C(=O)N1

O=C1CC(c2ccccc2)C(=O)N1

2 rings, 13 atoms, the 3-Phenylpyrrolidine-2,5-dione ring system.

183 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

  • H302Harmful if swallowed.
Precautionary statements (5)
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P301 + P317If swallowed: Get medical help.
  • P330Rinse mouth.
  • 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

Phensuximide suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 3 suppliers

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

3 suppliers in 2 countries

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Phensuximide price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

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Uses and applications

What the substance is used for, by industry and function

Roles

  • anticonvulsant
  • central nervous system depressant
  • central nervous system drug
  • pharmaceutical

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 Phensuximide 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 Phensuximide is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Phensuximide, based on the data on this page

What is Phensuximide?

Phensuximide is a member of pyrrolidines.

What is the CAS number of Phensuximide?

The CAS registry number of Phensuximide is 86-34-0. Other or deprecated CAS numbers: 34367-67-4.

What is the molecular formula and weight of Phensuximide?

The molecular formula of Phensuximide is C11H11NO2 and its molar mass is 189.21 g/mol.

What is Phensuximide used for?

Known uses and roles of Phensuximide include building blocks in research and laboratory, screening compounds in research and laboratory, anticonvulsant, central nervous system depressant, central nervous system drug and 1 more.

Is Phensuximide hazardous?

Phensuximide carries the GHS signal word "Warning". Main hazards: harmful if swallowed. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Phensuximide?

Phensuximide 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 Phensuximide?

CompoundList lists 3 suppliers of Phensuximide in China and United States. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Phensuximide?

Suppliers quote Phensuximide 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 Phensuximide

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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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