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ChemicalBook >> CAS DataBase List >> 2-Pentynoic acid

2-Pentynoic acid

2-Pentynoic acid price.
  • $10 - $1400.73
  • Product name: 2-Pentynoic acid
  • CAS: 5963-77-9
  • MF: C5H6O2
  • MW: 98.1
  • EINECS:
  • MDL Number:MFCD00014370
  • Synonyms:ethylacetylene carboxylic acid;Nsc289567;2-Pentynoic acid 97%;2-PENTYNOIC ACID, 98%2-PENTYNOIC ACID, 98%2-PENTYNOIC ACID, 98%2-PENTYNOIC ACID, 98%;Pent-2-ynoic acid;2-Pentynoic acid
Price46 Properties Safety Information Description
46 prices
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  • aablocks
  • ACHEMBLOCK
  • AK Scientific
  • American Custom Chemicals Corporation
  • Apolloscientific
  • Arctom
  • Atlantic Research Chemicals
  • Biosynth
  • Crysdot
  • GFS CHEMICALS
  • Medical Isotopes, Inc.
  • Sigma-Aldrich
  • SynQuest Laboratories
  • Thermo Scientific Chemicals
  • TRC
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  • 250mgs:
  • Manufactureraablocks
  • Product numberAA003HRI
  • Product descriptionPent-2-ynoic acid ≥97%
  • Packaging250mg
  • Price$10
  • Updated2026-05-28
  • Buy
  • Manufactureraablocks
  • Product numberAA003HRI
  • Product descriptionPent-2-ynoic acid ≥97%
  • Packaging1g
  • Price$20
  • Updated2026-05-28
  • Buy
  • Manufactureraablocks
  • Product numberAA003HRI
  • Product descriptionPent-2-ynoic acid 95%
  • Packaging5g
  • Price$53
  • Updated2026-05-28
  • Buy
  • Manufactureraablocks
  • Product numberAA003HRI
  • Product descriptionPent-2-ynoic acid 95%
  • Packaging10g
  • Price$102
  • Updated2026-05-28
  • Buy
  • Manufactureraablocks
  • Product numberAA003HRI
  • Product descriptionPent-2-ynoic acid 97%
  • Packaging100g
  • Price$688
  • Updated2026-05-28
  • Buy
  • ManufacturerACHEMBLOCK
  • Product numberW167899
  • Product descriptionPent-2-ynoic acid 95%
  • Packaging100G
  • Price$1050
  • Updated2026-05-27
  • Buy
  • ManufacturerACHEMBLOCK
  • Product numberW167899
  • Product descriptionPent-2-ynoic acid 95%
  • Packaging25G
  • Price$395
  • Updated2026-05-27
  • Buy
  • ManufacturerAK Scientific
  • Product numberJ57309
  • Product description2-Pentynoic acid
  • Packaging25g
  • Price$580
  • Updated2021-12-16
  • Buy
  • ManufacturerAK Scientific
  • Product numberJ57309
  • Product description2-Pentynoic acid
  • Packaging1g
  • Price$59
  • Updated2021-12-16
  • Buy
  • ManufacturerAmerican Custom Chemicals Corporation
  • Product numberCHM0021712
  • Product description2-PENTYNOIC ACID 95.00%
  • Packaging25G
  • Price$1400.73
  • Updated2021-12-16
  • Buy
  • ManufacturerAmerican Custom Chemicals Corporation
  • Product numberCHM0021712
  • Product description2-PENTYNOIC ACID 95.00%
  • Packaging5G
  • Price$878.03
  • Updated2021-12-16
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  • ManufacturerApolloscientific
  • Product numberOR70066
  • Product description2-Pentynoic acid
  • Packaging25g
  • Price$537
  • Updated2021-12-16
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  • ManufacturerApolloscientific
  • Product numberOR70066
  • Product description2-Pentynoic acid 97%
  • Packaging1g
  • Price$75
  • Updated2026-06-04
  • Buy
  • ManufacturerApolloscientific
  • Product numberOR70066
  • Product description2-Pentynoic acid 97%
  • Packaging5g
  • Price$170
  • Updated2026-06-04
  • Buy
  • ManufacturerArctom
  • Product numberCS-W013726
  • Product descriptionPent-2-ynoic acid >=98%
  • Packaging25g
  • Price$228
  • Updated2026-05-26
  • Buy
  • ManufacturerArctom
  • Product numberBD-A107561
  • Product description2-Pentynoic acid 95%
  • Packaging25g
  • Price$259
  • Updated2026-05-26
  • Buy
Manufacturer Product number Product description Packaging Price Updated Buy
aablocks AA003HRI Pent-2-ynoic acid ≥97% 250mg $10 2026-05-28 Buy
aablocks AA003HRI Pent-2-ynoic acid ≥97% 1g $20 2026-05-28 Buy
aablocks AA003HRI Pent-2-ynoic acid 95% 5g $53 2026-05-28 Buy
aablocks AA003HRI Pent-2-ynoic acid 95% 10g $102 2026-05-28 Buy
aablocks AA003HRI Pent-2-ynoic acid 97% 100g $688 2026-05-28 Buy
ACHEMBLOCK W167899 Pent-2-ynoic acid 95% 100G $1050 2026-05-27 Buy
ACHEMBLOCK W167899 Pent-2-ynoic acid 95% 25G $395 2026-05-27 Buy
AK Scientific J57309 2-Pentynoic acid 25g $580 2021-12-16 Buy
AK Scientific J57309 2-Pentynoic acid 1g $59 2021-12-16 Buy
American Custom Chemicals Corporation CHM0021712 2-PENTYNOIC ACID 95.00% 25G $1400.73 2021-12-16 Buy
American Custom Chemicals Corporation CHM0021712 2-PENTYNOIC ACID 95.00% 5G $878.03 2021-12-16 Buy
Apolloscientific OR70066 2-Pentynoic acid 25g $537 2021-12-16 Buy
Apolloscientific OR70066 2-Pentynoic acid 97% 1g $75 2026-06-04 Buy
Apolloscientific OR70066 2-Pentynoic acid 97% 5g $170 2026-06-04 Buy
Arctom CS-W013726 Pent-2-ynoic acid >=98% 25g $228 2026-05-26 Buy
Arctom BD-A107561 2-Pentynoic acid 95% 25g $259 2026-05-26 Buy
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Properties

Melting point :47-53 °C
Boiling point :125°C 30mm
Density :1.1133 (rough estimate)
refractive index :1.4619
Flash point :96 °C
storage temp. :2-8°C
pka :2.70±0.10(Predicted)
form :Solid
Appearance :White to yellow Solid
InChI :InChI=1S/C5H6O2/c1-2-3-4-5(6)7/h2H2,1H3,(H,6,7)
InChIKey :MINRDQDGBLQBGD-UHFFFAOYSA-N
SMILES :C(O)(=O)C#CCC

Safety Information

Symbol(GHS): Exclamation Mark (GHS07)
Signal word: Warning
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501
H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
Precautionary statements:
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash hands thoroughly after handling.
P264 Wash skin thouroughly after handling.
P270 Do not eat, drink or smoke when using this product.
P301+P312 IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.
P302+P352 IF ON SKIN: wash with plenty of soap and water.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Description

2-Pentynoic acid is used in the stereoselective synthesis of vinylstannanes. It is also used in the synthesis of spiroindolines derivatives.

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Suppliers and manufacturers

Hangzhou Copiore Chemical Co., Ltd. Shanghai Qinli Pharmaceutical Technology Co., LTD Shanghai Haozhixiang Biotechnology Co., Ltd J & K SCIENTIFIC LTD. Meryer (Shanghai) Chemical Technology Co., Ltd. Alfa Aesar Energy Chemical Beijing Ouhe Technology Co., Ltd Shanghai Aladdin Bio-Chem Technology Co.,LTD Bide Pharmatech Ltd.