Glycerol phenylbutyrate

Drug ingredient

CAS 611168-24-2

This chemical is an active pharmaceutical ingredient used in FDA-regulated drugs.

US productionNot reported

Import value, 2024$84M

Top sourceChina 63%

This chemical is not on EPA’s Toxic Substances Control Act inventory, the list behind EPA’s production survey.

Why supply is unknown

Production is reported production, not a complete census of factories. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 291639 · basket

These shares come from HS customs code 291639, which covers 229 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).

CN 63%ChinaIT 19%ItalyIN 8%IndiaDE 4%GermanyCH 3%Switzerland

Spain
Ukraine
Singapore
Turkey
Norway
Czech Republic
Taiwan
South Korea
Japan
Mexico
New Zealand
Canada
Sweden
Hong Kong
Latvia

13 FDA-registered drug labelers

Apothecon Pharmaceuticals Pvt Ltd

Aurobindo Pharma Limited

HAS Healthcare Advanced Synthesis SA

Hetero Drugs Limited

Horizon Therapeutics USA, Inc.

LUPIN MANUFACTURING SOLUTIONS LIMITED

Lupin Pharmaceuticals, Inc.

MSN Laboratories Private Limited

NURAY CHEMICALS PRIVATE LIMITED

Par Health USA, LLC

Patheon Austria GmbH & CoKG

PENN PHARMACEUTICAL SERVICES LIMITED

Teva API India Private Limited

Why It Matters

Sectors

Health

Downstream Uses

Appears in 2 drug and cosmetic product listings (FDA).

•glycerol phenylbutyrate
•Ravicti

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

Vendor Pricing

$964.00/gA2B Chem LLC

CountryUnited States

Pack$241.00 / 250 mg

Purity97%

Vendors18 available

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

17 more vendors

Vendor	Country	$/g	Pack	Purity
Molnova	China	$980.00	200 mg	99%
Aaron Chemicals LLC	Hong Kong	$1016.00	500 mg	97%
Angene Chemical	China → Hong Kong	$1024.00	500 mg	97%
MedKoo Biosciences, Inc	United States	$1050.00	1 g	98%
AA BLOCKS	United States	$1072.00	250 mg	97%
TargetMol Chemicals	China → United States	$1090.00	200 mg	99.74%
Combi-Blocks, Inc.	United States	$1160.00	100 mg	95%
BLD Pharmatech Ltd.	China	$1230.00	1 g	97%
BLD Pharmatech Co., Limited	United States	$1353.00	1 g	97%
Ambeed, Inc.	United States	$1353.00	1 g	97%
BLD Pharmatech GmbH	Germany	$1360.00	100 mg	97%
TargetMol Chemicals US	United States	$1470.00	100 mg	99.74%
TargetMol Chemicals EU	Austria	$1600.00	50 mg	99.74%
MedChemExpress MCE	Sweden	$2250.60	100 mg	99.81%
Cayman Europe	Estonia	$2368.10	100 mg	95%
AstaTech (2 weeks)	United States	$3000.00	100 mg	95%
Angene International Limited	United States	$3610.00	100 mg	98%

Chemical Identity

CAS611168-24-2

PubChem CID10482134

DTXSIDDTXSID40210005

FormulaC33H38O6

Mol. Weight530.6 g/mol

SMILESC1=CC=C(C=C1)CCCC(=O)OCC(COC(=O)CCCC2=CC=CC=C2)OC(=O)CCCC3=CC=CC=C3

Data Sources

PubChem · compound 10482134Retrieved 2026-04-07
FDA National Drug Code directoryRetrieved 2026-04-25
FDA National Drug Code directoryRetrieved 2026-04-07
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

Glycerol phenylbutyrate (CAS 611168-24-2) https://chemicalindependence.com/chemical/611168-24-2/ PubChem: 10482134. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/10482134 FDA National Drug Code directory: CAS 611168-24-2. Retrieved 2026-04-25. https://open.fda.gov/data/ndc/ FDA National Drug Code directory: bulk match. Retrieved 2026-04-07. https://open.fda.gov/data/ndc/ US Census international trade: HS 291639 for CAS 611168-24-2. Reporting year: 2024. https://usatrade.census.gov/