Phenazopyridine

Drug ingredient

CAS 94-78-0

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

US productionNot reported

Import value, 2024$1.3B

Top sourceChina 32%

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 293339 · basket

These shares come from HS customs code 293339, which covers 397 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 32%ChinaIN 15%IndiaDE 10%GermanyBE 9%BelgiumCH 8%Switzerland

Taiwan
Ukraine
Sweden
Argentina
Canada
Finland
Malta
Israel
Netherlands
Denmark
United Arab Emirates
Mexico
Brunei
Slovakia
Australia
South Africa
Poland
Latvia
Lithuania
Estonia
Slovenia
Czech Republic
Croatia
Hong Kong

1 FDA-registered drug labeler

VALENS MOLECULES PRIVATE LIMITED

Why It Matters

Sectors

Health

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

Vendor Pricing

$871.00/gAaron Chemicals LLC

CountryHong Kong

Pack$871.00 / 1 g

PurityNot recorded

Vendors8 available

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

7 more vendors

Vendor	Country	$/g	Pack	Purity
TargetMol Chemicals	China → United States	$2485.00	200 mg	99.98%
A2B Chem LLC	United States	$3520.00	50 mg	99.98%
AA BLOCKS	United States	$4060.00	50 mg	99.98%
TargetMol Chemicals EU	Austria	$4560.00	50 mg	99.98%
MedChemExpress MCE	Sweden	$8010.20	50 mg	99.93%
Angene International Limited	United States	$26200.00	10 mg	98%
MedKoo Biosciences, Inc	United States	$64800.00	5 mg	98%

Chemical Identity

CAS94-78-0

PubChem CID4756

DTXSIDDTXSID1023445

FormulaC11H11N5

Mol. Weight213.24 g/mol

SMILESC1=CC=C(C=C1)N=NC2=C(N=C(C=C2)N)N

Data Sources

PubChem · compound 4756Retrieved 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

Phenazopyridine (CAS 94-78-0) https://chemicalindependence.com/chemical/94-78-0/ PubChem: 4756. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/4756 FDA National Drug Code directory: CAS 94-78-0. 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 293339 for CAS 94-78-0. Reporting year: 2024. https://usatrade.census.gov/