phenelzine sulfate

Drug ingredient

CAS 156-51-4

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

US productionNot reported

Import value, 2024$191M

Top sourceSwitzerland 35%

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 292800 · basket

These shares come from HS customs code 292800, which covers 112 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).

CH 35%SwitzerlandIT 28%ItalyCN 12%ChinaIN 6%IndiaJP 6%Japan

Canada
Spain
Mexico
Netherlands
Poland
Malta
Norway
Ukraine
Belgium
Israel
Czech Republic
Austria
Indonesia
United Arab Emirates
Brazil
Lithuania

6 FDA-registered drug labelers

Lupin Pharmaceuticals,Inc.

Mylan Pharmaceuticals Inc.

Parke-Davis Div of Pfizer Inc

PROCOS S.p.A.

Siegfried Evionnaz SA

TYCHE INDUSTRIES LIMITED

Why It Matters

Sectors

Health

Downstream Uses

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

•phenelzine sulfate
•Nardil

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

$64.80/gAK Scientific, Inc.

CountryUnited States

Pack$1620.00 / 25 g

Purity98%

Vendors20 available

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

19 more vendors

Vendor	Country	$/g	Pack	Purity
A2B Chem LLC	United States	$69.68	25 g	97%
AA BLOCKS	United States	$72.00	25 g	97%
Sigma-Aldrich (Rush Stock)	Germany	$73.27	25 g	—
Sigma-Aldrich	Germany	$73.27	25 g	—
Aaron Chemicals LLC	Hong Kong	$89.40	5 g	99%
Angene International Limited	United States	$100.80	25 g	98%
Angene Chemical	China → Hong Kong	$102.40	5 g	98%
AstaTech (2 weeks)	United States	$118.80	5 g	95%
Molnova	China	$146.00	1 g	99%
AstaTech, Inc	United States	$146.80	5 g	99%
Combi-Blocks, Inc.	United States	$162.00	1 g	95%
TargetMol Chemicals	China → United States	$187.00	1 g	99.83%
TargetMol Chemicals EU	Austria	$256.00	500 mg	99.83%
Apexbio Technology LLC	United States	$298.00	500 mg	99.72%
Cayman Europe	Estonia	$352.24	1 g	98%
MedChemExpress MCE	Sweden	$411.40	500 mg	99.96%
TargetMol Chemicals US	United States	$500.00	100 mg	99.83%
MedKoo Biosciences, Inc	United States	$650.00	1 g	98%
Angene	China → Hong Kong	$4266.67	30 mg	98%

Chemical Identity

CAS156-51-4

PubChem CID61100

DTXSIDDTXSID3021144

FormulaC8H14N2O4S

Mol. Weight234.28 g/mol

SMILESC1=CC=C(C=C1)CCNN.OS(=O)(=O)O

Data Sources

PubChem · compound 61100Retrieved 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

phenelzine sulfate (CAS 156-51-4) https://chemicalindependence.com/chemical/156-51-4/ PubChem: 61100. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/61100 FDA National Drug Code directory: CAS 156-51-4. 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 292800 for CAS 156-51-4. Reporting year: 2024. https://usatrade.census.gov/