ChemicalBook >> CAS DataBase List >>4-Bromo-1-butyne
4-Bromo-1-butyne
- CAS No.
- 38771-21-0
- Chemical Name:
- 4-Bromo-1-butyne
- Synonyms
- 4-broMobut-1-yne;4-bromobutyne;1-Bromo-3-butyne;4-Bromo-1-butyne;3-Butynyl Bromide;4-Bromo-1-butyne >4-BroMo-1-butyne 97%;4-bromobut-1-yne - [B86644];1-Butyne, 4-bromo- (6CI,9CI);4-Bromo-1-butyne,1-Bromo-3-butyne
- CBNumber:
- CB5500121
- Molecular Formula:
- C4H5Br
- Molecular Weight:
- 132.99
- MDL Number:
- MFCD10000883
- MOL File:
- 38771-21-0.mol
- MSDS File:
- SDS
- TDS File:
- TDS
Last updated:2026-09-12 18:53:35
| Boiling point | 110 °C |
|---|---|
| Density | 1.417 g/mL at 25 °C |
| refractive index | 1.481 |
| Flash point | 24 °C |
| storage temp. | Inert atmosphere,Store in freezer, under -20°C |
| solubility | Chloroform (Slightly), Methanol (Slightly) |
| form | clear liquid |
| color | Colorless to Light yellow to Light orange |
| Water Solubility | Immiscible with water. |
| InChI | InChI=1S/C4H5Br/c1-2-3-4-5/h1H,3-4H2 |
| InChIKey | XLYOGWXIKVUXCL-UHFFFAOYSA-N |
| SMILES | C#CCCBr |
| UNSPSC Code | 12352100 |
| NACRES | NA.22 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |   GHS02,GHS06 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||
| Hazard statements | H226-H301-H317 | |||||||||
| Precautionary statements | P210-P280-P301+P310+P330-P302+P352 | |||||||||
| PPE | Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter | |||||||||
| Hazard Codes | T | |||||||||
| Risk Statements | 10-25-43 | |||||||||
| Safety Statements | 36/37-45 | |||||||||
| RIDADR | UN 1992 6.1(3) / PGIII | |||||||||
| WGK Germany | 3 | |||||||||
| HazardClass | 3 | |||||||||
| PackingGroup | III | |||||||||
| HS Code | 29039990 | |||||||||
| Storage Class | 3 - Flammable liquids | |||||||||
| Hazard Classifications | Acute Tox. 3 Oral Flam. Liq. 3 Skin Sens. 1 |
|||||||||
| Limited Quantities | 5.0 L (1.3 gallons) (liquid) | |||||||||
| Excepted Quantities | Max Inner Pack (30g or 30ml) and Max Outer Pack (1Kg or 1L) | |||||||||
| NFPA 704 |
|
4-Bromo-1-butyne price More Price(37)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 675725 | 4-Bromo-1-butyne 97% | 38771-21-0 | 5g | $112 | 2026-04-30 | Buy |
| TCI Chemical | B3242 | 4-Bromo-1-butyne >97.0%(GC) | 38771-21-0 | 5g | $77 | 2026-04-30 | Buy |
| TRC | TRC-B682950-10G | 4-Bromo-1-butyne | 38771-21-0 | 10g | $193 | 2026-06-03 | Buy |
| Biosynth | FB164813 | 4-Bromo-1-butyne | 38771-21-0 | 25g | $324.5 | 2026-06-04 | Buy |
| Biosynth | FB164813 | 4-Bromo-1-butyne | 38771-21-0 | 50g | $519 | 2026-06-04 | Buy |
4-Bromo-1-butyne Chemical Properties, Uses, Production
Chemical Properties
Yellow liquid
Uses
4-Bromo-1-butyne is used for pharmaceutical intermediates.
Uses
4-Bromo-1-butyne is used as a reactant in the synthesis of:
- Macrocycles by cobalt-mediated [2+2+2] co-cyclotrimerization.
- 2,4,5-trisubstituted oxazoles by a gold-catalyzed formal [3+2] cycloaddition.
- Intramolecular 1,3-dipolar cycloaddition to synthesize 1,3,4-oxadiazoles.
- Lactones bearing alkynes for reductive cyclization in the preparation of azulene derivatives.
- Substituted α-pyrones by gold-catalyzed coupling reactions.
Synthesis
4-Bromo n-butyne can be obtained by reacting 3-butyn-1-ol with phosphorus tribromide.
4-Bromo-1-butyne Preparation Products And Raw materials
Global Suppliers ( 176)
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Anqing Jida Biotechnology Co., Ltd. | 0556-5881618 18956990316 | sales@jidapharm.com | China | 100 | 55 |
| J & K SCIENTIFIC LTD. | 18210857532 18210857532 | jkinfo@jkchemical.com | China | 96815 | 76 |
| Meryer (Shanghai) Chemical Technology Co., Ltd. | 4006356688 18621169109 | market03@meryer.com | China | 40202 | 62 |
| Alfa Aesar | 400-6106006 | saleschina@alfa-asia.com | China | 30103 | 84 |
| TCI (Shanghai) Development Co., Ltd. | 021-67121386 | Sales-CN@TCIchemicals.com | China | 24512 | 81 |
| ShangHai DEMO Chemical Co.,Ltd | 400-021-7337 2355568890 | sales@demochem.com | China | 2569 | 57 |
| Energy Chemical | 400-0056266 | sales8178@energy-chemical.com | China | 44850 | 61 |
| Beijing Ouhe Technology Co., Ltd | 13552068683 13522913783 | 2355560935@qq.com | China | 11777 | 60 |
| Jia Xing Isenchem Co.,Ltd | 0573-85285100 18627885956 | isenchem@163.com | China | 9389 | 66 |
| Accela ChemBio Co.,Ltd. | 021-50795510 4000665055 | marketing@accelachem.com | China | 10972 | 64 |
View Latest Price from 4-Bromo-1-butyne manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-08-18 | 4-BROMO-1-BUTYNE
38771-21-0
|
1KG | 98% | 1000 KG | Shaanxi Dideu New Materials Co. Ltd | ||
 |
2025-04-04 | 4-BROMO-1-BUTYNE
38771-21-0
|
1kg | 98% | 1Ton | Henan Aochuang Chemical Co.,Ltd. | ||
 |
2021-07-13 | 4-Bromo-1-butyne
38771-21-0
|
$10.00-15.00 | 1KG | 99%+ HPLC | Zhuozhou Wenxi import and Export Co., Ltd |
-
- 4-BROMO-1-BUTYNE
38771-21-0
- $0.00
- 98%
- Shaanxi Dideu New Materials Co. Ltd
-
- 4-BROMO-1-BUTYNE
38771-21-0
- 98%
- Henan Aochuang Chemical Co.,Ltd.
-
- 4-Bromo-1-butyne
38771-21-0
- $10.00-15.00
- 99%+ HPLC
- Zhuozhou Wenxi import and Export Co., Ltd
38771-21-0 (4-Bromo-1-butyne) Related Search:
4-BROMO-1-BUTYNE, 98%4-BROMO-1-BUTYNE, 98%4-BROMO-1-BUTYNE, 98%4-BROMO-1-BUTYNE, 98%
4-Bromo-1-butyne,1-Bromo-3-butyne
1-Bromo-3-butyne
3-Butynyl Bromide
4-BroMo-1-butyne 97%
4-Bromo-1-butyne >
4-Bromo-1-butyne, 97%, for synthesis
1-Butyne, 4-bromo- (6CI,9CI)
4-bromobutyne
4-bromobut-1-yne - [B86644]
4-broMobut-1-yne
4-Bromo-1-butyne
38771-21-0
HCCCH2CH2Br
Acetylenes
Functionalized Acetylenes
