Sulfadiazine

Drug ingredient

CAS 68-35-9

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

Molecular structure of 68-35-9
US productionNot reported
Import value, 2024$2.0B
Top sourceIreland 63%

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 293590 · basket

These shares come from HS customs code 293590, which covers 182 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
IE 63%IrelandSG 14%SingaporeIN 7%IndiaCN 7%ChinaCH 2%Switzerland
7 FDA-registered drug labelers
Andhra Organics Limited
Chartwell RX, LLC
EPIC PHARMA, LLC
Hunan Xiangyikang Pharmaceutical Co., Ltd.
Medisca Inc.
VALENS MOLECULES PRIVATE LIMITED
Wugan Pharmaceutical (Suzhou) Co., Ltd.

Why It Matters

Sectors
Health
Downstream Uses

Appears in 1 drug and cosmetic product listings (FDA).

  • •Sulfadiazine
FDA Shortage Status
No FDA shortage records

Vendor Pricing

$0.07/gAaron Chemicals LLC
CountryHong Kong
Pack$36.00 / 500 g
Purity98%
Vendors31 available

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

Chemical Identity

CAS68-35-9
PubChem CID5215
DTXSIDDTXSID7044130
FormulaC10H10N4O2S
Mol. Weight250.28 g/mol
SMILESC1=CN=C(N=C1)NS(=O)(=O)C2=CC=C(C=C2)N

Data Sources

Brief citations

Sulfadiazine (CAS 68-35-9) https://chemicalindependence.com/chemical/68-35-9/ PubChem: 5215. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/5215 EPA TSCA Inventory: CAS 68-35-9. 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 293590 for CAS 68-35-9. Reporting year: 2024. https://usatrade.census.gov/