2-Methyl-3-butyn-2-ol

CAS 115-19-5

U.S. production volumes are classified as confidential business information.

US productionCBI

Confidential Business Information. The EPA withholds this volume because publishing it could reveal the reporting company's trade secrets.

Import value, 2024$52M

Top sourceIndia 29%

At least one company claimed its 2019 production or import volume for this chemical as confidential, so EPA withholds it.

Why supply is unknown

Production is reported production, not a complete census of factories. US production volume is confidential. Production reporting year: 2019. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 290529 · basket

EPA reports by year

2019: US production Confidential · Imports Confidential

These shares come from HS customs code 290529, which covers 116 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries

Country of origin for US imports, from Census customs data (2024).

IN 29%IndiaJP 27%JapanCN 15%ChinaCH 10%SwitzerlandDE 4%Germany

Canada
Spain
United Kingdom
Slovakia
Ukraine
Hong Kong
Greece
Russia
Sweden

EPA-registered importers (3)

Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.

Basf Se · DE Germany

Basf

Lonza

Why It Matters

Sectors

AgricultureConsumer ProductsCore Chemicals

Downstream UsesNot recorded

FDA Shortage Status

Whether any manufacturer currently reports this drug as in shortage on the FDA Drug Shortages database. "Active Shortage" means at least one presentation has status "current."

No FDA shortage records

Industrial Uses

Used in 4 sectors as 4 functional roles.

•Intermediate in All Other Basic Organic Chemical Manufacturing (100%)Processing as a reactant
•Diluent in Pesticide, Fertilizer, and Other Agricultural Chemical ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
•Solubility enhancer in Soap, Cleaning Compound, and Toilet Preparation ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
•Surface active agents in All Other Chemical Product and Preparation ManufacturingProcessing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.07/gManchester Organics

CountryUnited Kingdom

Pack$70.50 / 1 kg

Purity98%

Vendors6 available

Prices reflect listed pack sizes. Small research packs run far above bulk rates.

5 more vendors

Vendor	Country	$/g	Pack	Purity
Combi-Blocks, Inc.	United States	$0.25	1 kg	98%
A2B Chem LLC	United States	$0.27	1 kg	98%
AA BLOCKS	United States	$0.28	1 kg	98%
Fluorochem UK	United Kingdom	$0.37	100 g	95%
Interbioscreen	Hong Kong	$24.00	10 g	95%

Chemical Identity

CAS115-19-5

PubChem CID8258

DTXSIDDTXSID2021949

FormulaC5H8O

Mol. Weight84.12 g/mol

SMILESCC(C)(C#C)O

Data Sources

EPA CompTox (DSSTox) · DTXSID2021949Retrieved 2026-04-06
PubChem · compound 8258Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2019 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2019 · Retrieved 2026-10-04
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

2-Methyl-3-butyn-2-ol (CAS 115-19-5) https://chemicalindependence.com/chemical/115-19-5/ EPA CompTox (DSSTox): DTXSID2021949. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID2021949 PubChem: 8258. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/8258 EPA Chemical Data Reporting: 115-19-5. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 115-19-5. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 290529 for CAS 115-19-5. Reporting year: 2024. https://usatrade.census.gov/