phenyl isothiocyanate

Drug ingredient

CAS 103-72-0

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

US productionNot reported

Import value, 2024$760M

Top sourceChina 33%

This chemical is listed as active in US commerce, but no company reported it to EPA’s survey for 2019 or 2023. Sites may have made or imported less than the threshold amount, or none.

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 293090 · basket

These shares come from HS customs code 293090, which covers 418 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 33%ChinaES 14%SpainCH 9%SwitzerlandIT 7%ItalyIN 7%India

Israel
Croatia
Ukraine
Slovakia
United Arab Emirates
Ireland
Poland
Lithuania
Brazil
Singapore
Australia
Armenia
Hong Kong
Vietnam
Czech Republic
Hungary
Greece
Russia

5 FDA-registered drug labelers

Deseret Biologicals

Deseret Biologicals, Inc.

Energique, Inc.

Pro Weight Loss Inc.

Professional Complementary Health Formulas

Why It Matters

Sectors

Health

Downstream Uses

Appears in 6 drug and cosmetic product listings (FDA).

•Energize
•Dairy Allergen Mix
•Phenylisothiocyanate 1533
•Thyro Support
•Multi-Phenolic
•Allermilk

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

$0.25/gA2B Chem LLC

CountryUnited States

Pack$125.00 / 500 g

Purity95%

Vendors12 available

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

11 more vendors

Vendor	Country	$/g	Pack	Purity
AA BLOCKS	United States	$0.27	500 g	95%
ALFA AESAR	Germany	$0.49	500 g	97%
AK Scientific Specialized	United States	$0.56	100 g	95%
Sigma-Aldrich (Rush Stock)	Germany	$0.57	500 g	98%
Sigma-Aldrich	Germany	$0.57	500 g	98%
AK Scientific, Inc.	United States	$0.78	100 g	98%
AstaTech, Inc	United States	$1.88	25 g	98%
Fluorochem UK	United Kingdom	$3.43	25 g	99%
ChemDiv, Inc.	United States	$25.00	25 g	90%
Interbioscreen	Hong Kong	$34.00	10 g	95%
Labotest KG	Germany	$453.00	1000 mg	90%

Chemical Identity

CAS103-72-0

PubChem CID7673

DTXSIDDTXSID0021129

FormulaC7H5NS

Mol. Weight135.19 g/mol

SMILESC1=CC=C(C=C1)N=C=S

Data Sources

PubChem · compound 7673Retrieved 2026-04-07
EPA TSCA InventoryRetrieved 2026-04-24
FDA National Drug Code directoryRetrieved 2026-04-07
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

phenyl isothiocyanate (CAS 103-72-0) https://chemicalindependence.com/chemical/103-72-0/ PubChem: 7673. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/7673 EPA TSCA Inventory: CAS 103-72-0. Retrieved 2026-04-24. https://www.epa.gov/tsca-inventory FDA National Drug Code directory: bulk match. Retrieved 2026-04-07. https://open.fda.gov/data/ndc/ US Census international trade: HS 293090 for CAS 103-72-0. Reporting year: 2024. https://usatrade.census.gov/