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Impurities and reference standards

N-Bromobutanimide

Also known as N-Bromosuccinimide, 1-Bromopyrrolidine-2,5-dione, Succinbromimide

CAS 128-08-5Formula C4H4BrNO2Molar mass 177.99 g/molEC 204-877-2
GHS signal word: Danger. Pictograms: Oxidiser, Corrosive, Harmful or irritant, Serious health hazard 89 suppliers listed
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N-Bromobutanimide chemical structure, C4H4BrNO2, CAS 128-08-5
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Orthorhombic bisphenoidal crystals
Melting point
173 to 175
Boiling point
338.9 °C
Density
2.098 g/cm³ at 25 °C
Solubility
In water, 1.47 g/100 g water at 25 °C
HS code
292519
Category
Impurities and reference standards
Illustrative photo, closed jumbo bulk bags in a warehouse in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is N-Bromobutanimide?

Plain description, key identifiers and synonyms

N-bromosuccinimide is a five-membered cyclic dicarboximide compound having a bromo substituent on the nitrogen atom. It has a role as a reagent. It is a dicarboximide, an organobromine compound and a pyrrolidinone. It is functionally related to a succinimide.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
1-bromopyrrolidine-2,5-dione
CAS number
128-08-5 CAS number cross-checked
EC number
204-877-2
Molecular formula
C4H4BrNO2
UNII
K8G1F2UCJF
MDL number
MFCD00005510
InChIKey
PCLIMKBDDGJMGD-UHFFFAOYSA-N
InChI
InChI=1S/C4H4BrNO2/c5-6-3(7)1-2-4(6)8/h1-2H2
SMILES (canonical and isomeric)
C1CC(=O)N(C1=O)Br

Synonyms

  • N-Bromosuccinimide
  • 1-Bromopyrrolidine-2,5-dione
  • Succinbromimide
  • 2,5-Pyrrolidinedione, 1-bromo-
  • Succinbromide
  • 1-Bromo-2,5-pyrrolidinedione
  • Succinibromimide
  • N-Bromosuccimide
  • NBS
  • Succinimide, N-bromo-
  • N-Bromsuccinimide
  • N-bromo-succinimide
  • Succinobromimide
  • 1-Bromo-2,5-pyrrolidine-dione
  • Letrozole Impurity 13
  • 1-Bromodihydro-1H-pyrrole-2,5-dione
  • 1-bromoazolidine-2,5-dione
  • n-bromo succinimide
  • bromo-succinimide
  • N-Bromsuccinimid
  • N-bromosuccinimid
  • N-bromosuccmimide
  • 1-Bromo-2,5-pyrrolidinedione, Bromosuccinimide, NBS, NSC 16, Succinbromimide,
  • n-brom-succinimide
  • N-bromo succinimid
Show all 37 synonyms
  • N-bromosuccinirnide
  • N-brornosuccinimide
  • JV-bromosuccinimide
  • N -bromosuccinimide
  • N-bromosuccin-imide
  • N- Bromosuccinimide
  • N-bromo succinic imide
  • 2, 1-bromo-
  • N-bromosuccinic acid imide
  • N-bromo succinic acid imide
  • 1-brompyrrolidine-2,5-dione
  • N-Bromopyrrolidine-2,5-dione

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

Appearance
Orthorhombic bisphenoidal crystalsexp.
Odour
Faint odor of bromineexp.
Melting point
173 to 175exp.
Boiling point
338.9 °Cexp.
Density
2.098 g/cm³ at 25 °Cexp.
Solubility
In water, 1.47 g/100 g water at 25 °Cexp.
Vapour pressure
VP: 0.001 Pa at 25 °Cexp.

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
177.99 g/molcalc.
Exact mass
176.9425 Dacalc.
LogP (octanol/water)
0.45calc.
Topological polar surface area
37.38 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
0calc.
Heavy atoms
8calc.
Rings
1calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.5calc.
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=C1CCC(=O)N1

O=C1CCC(=O)N1

1 ring, 7 atoms, the Succinimide ring system.

1,276 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS03: Oxidiser
Oxidiser
GHS05: Corrosive
Corrosive
GHS07: Harmful or irritant
Harmful or irritant
GHS08: Serious health hazard
Serious health hazard
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H272May intensify fire, oxidiser.
  • H290May be corrosive to metals.
  • H302Harmful if swallowed.
  • H314Causes severe skin burns and eye damage.
  • H315Causes skin irritation.
  • H317May cause an allergic skin reaction.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
  • H341Suspected of causing genetic defects.
  • H400Very toxic to aquatic life.
Precautionary statements (37)
  • P203Obtain, read and follow all safety instructions before use.
  • P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
  • P220Keep away from clothing and other combustible materials.
  • P234Keep only in original packaging.
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • 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.
  • P272Contaminated work clothing should not be allowed out of the workplace.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P317If swallowed: Get medical help.
  • P301 + P330 + P331If swallowed: Rinse mouth. Do not induce vomiting.
  • P302 + P352If on skin: Wash with plenty of water.
  • P302 + P361 + P354If on skin: Take off immediately all contaminated clothing. Immediately rinse with water for several minutes.
  • 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.
  • P316Get emergency medical help immediately.
  • P318If exposed or concerned, get medical advice.
  • 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.
  • P333 + P317If skin irritation or rash occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P363Wash contaminated clothing before reuse.
  • P370 + P378In case of fire: Use appropriate media to extinguish.
  • P390Absorb spillage to prevent material damage.
  • P391Collect spillage.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • P406Store in a corrosion resistant container with a resistant inner liner.
  • 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

N-Bromobutanimide suppliers

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All 89 suppliers
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Where suppliers are based

89 suppliers in 10 countries

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N-Bromobutanimide 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

Controlled, low-energy bromination.

Useful in organic synthesis for allylic bromination (Wohl-Ziegler reaction), aromatic ring and side-chain bromination, for oxidation, e.g., alcohols to carbonyl compounds, for dehydrohalogenation, and is used in the commercial production of cortisone and vitamin D3.

In bromination of olefins, in oxidation of alcohols to aldehydes and ketones and of aldehydes to acid bromides.

Manufacture of fine chemicals.

Roles

  • reagent

How it is made

Prepared by addition of bromine to a cold aqueous solution of succinimide or by reaction of succinimide with NaBrO2 in the presence of HBr.

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

Frequently asked questions

Quick answers about N-Bromobutanimide, based on the data on this page

What is N-Bromobutanimide?

N-bromosuccinimide is a five-membered cyclic dicarboximide compound having a bromo substituent on the nitrogen atom. It has a role as a reagent. It is a dicarboximide, an organobromine compound and a pyrrolidinone. It is functionally related to a succinimide.

What is the CAS number of N-Bromobutanimide?

The CAS registry number of N-Bromobutanimide is 128-08-5.

What is the molecular formula and weight of N-Bromobutanimide?

The molecular formula of N-Bromobutanimide is C4H4BrNO2 and its molar mass is 177.99 g/mol.

What is N-Bromobutanimide used for?

Controlled, low-energy bromination. Useful in organic synthesis for allylic bromination (Wohl-Ziegler reaction), aromatic ring and side-chain bromination, for oxidation, e.g., alcohols to carbonyl compounds, for dehydrohalogenation, and is used in the commercial production of cortisone and vitamin D3.

Is N-Bromobutanimide hazardous?

N-Bromobutanimide carries the GHS signal word "Danger". Main hazards: may intensify fire, oxidiser, may be corrosive to metals, harmful if swallowed. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of N-Bromobutanimide?

N-Bromobutanimide 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 N-Bromobutanimide?

CompoundList lists 89 suppliers of N-Bromobutanimide in China, India, United States, United Kingdom and 6 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy N-Bromobutanimide in India?

22 suppliers in India list N-Bromobutanimide on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of N-Bromobutanimide?

Suppliers quote N-Bromobutanimide 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 N-Bromobutanimide

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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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