3-Bromo-1-butyne - ≥90% , CAS No.18668-72-9

CAS: 18668-72-9 Cat. No.: B476941 Molecular Weight: 132.99 Beilstein Registry Number: 1098353 EC Number: 623-994-3
AVAILABLE TO ORDER
GRADE & PURITY ≥90%
Synonyms
SCHEMBL4226099 | 1-Butyne, 3-bromo- | 3-bromobut-1-yne | methyl-propargyl bromide | MFCD12406807 | 2-Bromo-3-butyne | 3-Bromo-1-butyne, technical, >=90% (GC) | PYJVGTWBTIEAMV-UHFFFAOYSA-N | 3-bromobutyne | methyl propargyl bromide | AKOS015893022 | AMY120
Storage
Store at 2-8°C,Argon charged
Shipped In
Wet ice
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
250mg
B476941-250mg
8-12 wks(?) Production requires sourcing of materials. We appreciate your patience and understanding.
$129.90
1g
B476941-1g
8-12 wks(?) Production requires sourcing of materials. We appreciate your patience and understanding.
$399.90
5g
B476941-5g
8-12 wks(?) Production requires sourcing of materials. We appreciate your patience and understanding.
$1,729.90
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Why this grade

≥90% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Store at 2-8°C,Argon charged Ships Wet ice Check lot-specific COA for exact specifications.

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Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

📚

Literature proof

Cited in 0 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
SCHEMBL4226099 | 1-Butyne, 3-bromo- | 3-bromobut-1-yne | methyl-propargyl bromide | MFCD12406807 | 2-Bromo-3-butyne | 3-Bromo-1-butyne, technical, >=90% (GC) | PYJVGTWBTIEAMV-UHFFFAOYSA-N | 3-bromobutyne | methyl propargyl bromide | AKOS015893022 | AMY120
Specifications & Purity
≥90%
Storage
Store at 2-8°C, Argon charged
Shipped In
Wet ice
This product requires cold chain shipping. Ground and other economy services are not available.
Purity
≥90%
Names and Identifiers
Pubchem Sid504765768
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/504765768
Canonical SmilesCC(C#C)Br
IUPAC Name3-bromobut-1-yne
InChIKeyPYJVGTWBTIEAMV-UHFFFAOYSA-N
INCHI1S/C4H5Br/c1-3-4(2)5/h1,4H,2H3
Isomeric SMILES CC(C#C)Br
WGK Germany 3
Molecular Weight 132.99
Beilstein 1098353
Reaxy-Rn 1098353
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=1098353&ln=

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassAcetylides
ClassNot available
SubclassNot available
Intermediate Tree Nodes Not available
Direct ParentAcetylides
Alternative Parents Organobromides  Hydrocarbon derivatives  Alkyl bromides  
Molecular FrameworkAliphatic acyclic compounds
Substituents Acetylide - Hydrocarbon derivative - Organobromide - Organohalogen compound - Alkyl halide - Alkyl bromide - Aliphatic acyclic compound
DescriptionThis compound belongs to the class of organic compounds known as acetylides. These are compounds arising by replacement of one or both hydrogen atoms of acetylene (ethyne) by a metal or other cationic group. E.g. NaC#CH monosodium acetylide. By extension, analogous compounds derived from terminal acetylenes, RC#CH. The class is limited here to derivatives of acetylene where the hydrogen atom is replaced with an element with similar or lower electronegativity that carbon.
External Descriptors Not available
3D Structure
Interactive Chemical Structure Model





Certificates(CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

6 results found

Lot NumberCertificate TypeDateItem
F2309224Certificate of AnalysisMar 09, 2026 B476941
F2309226Certificate of AnalysisMar 09, 2026 B476941
F2309321Certificate of AnalysisMar 09, 2026 B476941
F2309322Certificate of AnalysisMar 09, 2026 B476941
F2306321Certificate of AnalysisMay 11, 2023 B476941
F2306322Certificate of AnalysisMay 11, 2023 B476941
Chemical and Physical Properties
Refractive Indexn20/D 1.472
Flash Point(°F)75.2 °F
Flash Point(°C)24 °C
Molecular Weight132.990 g/mol
XLogP31.500
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count0
Rotatable Bond Count0
Exact Mass131.957 Da
Monoisotopic Mass131.957 Da
Topological Polar Surface Area0.000 Ų
Heavy Atom Count5
Formal Charge0
Complexity57.300
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count1
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count1
Solution Calculators
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