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Home/Compounds/CAS 13991-36-1
Formula C4H5BrO2MW 164.99Research-use catalog entryCOA/SDS by request

4-Bromocrotonic acid

CAS Number: 13991-36-1

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Loading RDKit molecule structure...
InChIKey: DOTGZROJTAUYFQ-OWOJBTEDSA-NC4H5BrO2 | MW 164.99

Chemical Absolute Identifiers

CAS Number

13991-36-1

PubChem CID

6436411

Molecular Formula

C4H5BrO2

Molecular Weight

164.99 g/mol

Exact Mass

163.94729

InChIKey

DOTGZROJTAUYFQ-OWOJBTEDSA-N

IUPAC Name

(E)-4-bromobut-2-enoic acid

SMILES String

O=C(O)/C=C/CBr

Physical Properties

No physical property values available.

Properties are provided as catalog reference data and may be confirmed through supplier documentation when required.

Catalog Facts

Structural features

4-Bromocrotonic acid (CAS 13991-36-1) is listed in the Pharmaceutical Intermediates portfolio, with molecular formula C4H5BrO2 and molecular weight 164. 99 g/mol.

Sourcing context

Catalog reference for RFQ preparation, supplier confirmation, and research chemical sourcing review.

Research use context

Intended for research-stage medicinal chemistry and intermediate synthesis workflows.

Documentation needs

COA/SDS status, availability, lead time, pack size, and shipment documentation can be confirmed during quotation.

Applications & Classification

Pharmaceutical Intermediate ResearchResearch intermediateCustom synthesis building blockPharmaceutical intermediate researchResearch chemical sourcingCustom synthesis and catalog availability reviewCOA, SDS, pricing, and fulfillment workflow

Safety & Handling

Safety and handling reference content is available through documentation requests.

For supplier-issued SDS, request documentation before handling, storage, shipment, or procurement decisions.

Preliminary Safety Reference

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Names & Synonyms / External Identifiers

Chemical Name

4-Bromocrotonic acid

Names & Synonyms

4-bromobut-2-enoic acid2-Butenoic acid, 4-bromo-, (2E)-(2E)-4-bromobut-2-enoic acid(2E)-4-Bromo-2-butenoic acid(E)-4-Bromocrotonic Acid
Show all synonyms
GAMMA-BROMOCROTONIC ACIDtrans-4-Bromo-2-butenoic Acid2-Butenoic acid, 4-bromo-(e)-4-bromo-2-butenoic acid2-Butenoic acid, 4-bromo-, (E)-4-Bromo crotonic acid(E)-4-bromobut-2-enoicacid(E)-4-Bromo-but-2-enoic acid4-Bromocrotonic acid - min 98%(2E) -4- Bromo- 2- butenoic acidB2298(E)-4-Bromocrotonic Acid(Discontinued,See C4X-11348)
External Identifiers
EC NUMBER: 678-082-8DSSTOX SUBSTANCE ID: DTXSID80878724WIKIDATA ID: Q72452174
Experimental Spectrum References
Vapor Phase IR Spectra

Documentation & Compliance Facts

Compliance Facts

Shipment review: Required

Documentation available by request

Certificate of Analysis (COA): By request

Supplier Safety Data Sheet (SDS): By request

Purity and pack size confirmation: By request

Availability and lead time review: Confirmed by RFQ

Shipment documentation review: By request

For supplier-issued documentation by request, use the RFQ actions on this page.Review preliminary safety reference

What happens after RFQ

  1. 1We review the CAS identity, quantity, and documentation request.
  2. 2We check sourcing options, supplier availability, COA/SDS, purity, pack size, and lead time.
  3. 3We review destination and shipment documentation needs when applicable.
  4. 4We follow up with a quotation or clarification request.

Text Reference Cues

Additional text reference cues are not available for this catalog entry.

Non-public references are shown as text only and do not imply equivalence, availability, or shared use.

Catalog navigation

Related Catalog Entries

Other public CAS pages in this catalog. These links support navigation across additional intermediates and do not imply equivalence, availability, or shared use.

CAS 107-93-7Crotonic AcidCAS 1002310-00-0Tert-butyl 1-(2-chloro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethylcarbamateCAS 1005174-17-3(E)-3-(2-Propyl-6-(trifluoromethyl)pyridin-3-yl)acrylic acidCAS 1018125-49-92-(3-Cyclopropyl-6-ethyl-4-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl)acetic acidCAS 1018128-07-8Isopropyl 4-chloro-2-methylquinoline-6-carboxylateCAS 1018142-22-76-cyclopropyl-1-(2,2-difluoroethyl)-3-methyl-1H-pyrazolo[3,4-b]pyridine-4-carboxylic acidCAS 1018144-00-72-(3-Cyclopropyl-6-isopropyl-4-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl)acetic acid

RFQ questions for CAS 13991-36-1

What are the key identifiers for 4-Bromocrotonic acid (CAS 13991-36-1)?

4-Bromocrotonic acid is identified by CAS 13991-36-1, with molecular formula C4H5BrO2, molecular weight 164.99, InChIKey DOTGZROJTAUYFQ-OWOJBTEDSA-N.

Can I request a COA for CAS 13991-36-1?

Yes. Submit an RFQ and specify COA requirements. Lot-specific COA depends on supplier confirmation.

Can I request supplier SDS for 4-Bromocrotonic acid?

Yes. Supplier SDS can be requested through the RFQ workflow before handling, storage, shipment, or procurement decisions.

Is CAS 13991-36-1 available for quotation?

Availability, pack size, lead time, and pricing are confirmed through RFQ.

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