Ensulizole
Drug ingredientCAS 27503-81-7
This chemical is an active pharmaceutical ingredient used in FDA-regulated drugs.
US productionNot reported
Import value, 2024$1.4B
Top sourceIreland 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 unknownProduction 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 293399 · basket
These shares come from HS customs code 293399, which covers 518 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).
IE 33%IrelandCN 26%ChinaIN 11%IndiaDE 9%GermanyIT 4%Italy
- Taiwan
- Poland
- Canada
- Ivory Coast
- Greece
- Hungary
- Indonesia
- Latvia
- Belgium
- Slovakia
- Czech Republic
- Austria
- Netherlands
- Finland
- Denmark
- Croatia
- Australia
- South Africa
- Sweden
- Hong Kong
- Malta
- Singapore
- Lithuania
- Malaysia
- Oman
- Serbia
36 FDA-registered drug labelers
Access Business Group LLC
AHAVA - Dead Sea Laboratories Ltd
Amway Corp
Beiersdorf Inc
Biocosmetica Exel Argentina SRL
Chemspec Chemicals PVT LTD
CLINIQUE LABORATORIES LLC
CONOPCO Inc. d/b/a Unilever
Cosmocos Co., Ltd
DSM Nutritional Products LLC
ESTEE LAUDER INC
Exelencia importers Corp.
fmg Co.Ltd
Foshan Sugar Max Cosmetics CO.,Ltd
Guangzhou Meixi Biotechnology Co., Ltd.
Hangzhou Jingshen Trading Co., Ltd.
IT COSMETICS, LLC
L'Oreal USA Products Inc
LG H&H Co., Ltd.
Longway Technology(Guangzhou) Co., Ltd.
Manyo Factory Corp.
NATURECELL CO., LTD.
NOXELL CORPORATION
Parfums Christian Dior
Pella Pharmaceuticals Co. Ltd
SHISEIDO AMERICAS CORPORATION
SICOS ET CIE
SIMPLI SKIN MD LLC
Sled Distribution, LLC
STRYX MEN, INC.
Susonity Production GmbH
Symrise AG
Symrise Inc.
Tecnoglobal, PH7 S.A. DE C.V.
TOM FORD BEAUTY DIST
Yidu Huayang Chemical Co., Ltd.
Why It Matters
Sectors
Health
Downstream Uses
Appears in 69 drug and cosmetic product listings (FDA).
- •Phofay Matte Sunscreen Liquid Foundation SPF 30 2
- •Phofay Matte Sunscreen Liquid Foundation SPF 30 3
- •Manyo Air Light Moisturizing Sunscreen SPF 50
- •LOreal Paris Skin Paradise Water Infused Tinted Moisturizer Broad Spectrum SPF 19 Sunscreen
- •Capture Totale C.E.L.L. Energy Super Potent Serum Foundation Broad Spectrum SPF 20 1N
- •Thefaceshop Cushion CC SPF 50 Apricot Beige Oil-Free
- •Koneuk Sunscreen SPF50
- •Eucerin Daily Protection Face
Show all 69
- •Lancome Paris Teint Idole Ultra Care and Glow Skincare Foundation Broad Spectrum SPF 27 Sunscreen
- •Thefaceshop Cushion CC SPF 50 Natural Beige Oil-Free
- •Thefaceshop Cushion CC Total Cover SPF 50 Natural Beige
- •cle de peau Beaute Correcting VEIL n M
- •Ahava MultiVitamin Day SPF30
- •Capture Totale C.E.L.L. Energy Super Potent Serum Foundation Broad Spectrum SPF 20 1,5N
- •FULL Spectrum Matte Ambition SKIN Primer SPF 20
- •EVEN Better Clinical Vitamin Makeup Broad Spectrum SPF 45
- •Thefaceshop Natural Sun Long Lasting Sunscreen Broad Spectrum SPF 50
- •Ahava CC SPF 30
- •Ahava Protecting Moisturizing SPF50
- •Dove Men plus Care Hydrate Face
- •MY Medic SPF 30 REEF Friendly Sunscreen
- •Artistry Ideal Radiance Illuminating CC SPF 50 Broad Spectrum Sunscreen Medium
- •OHUI Ultimate Cover CC Cushion Compact 01 Light Beige
- •Ahava Extreme Daily Firmness And Protection Broad Spectrum SPF30
- •Capture Totale C.E.L.L. Energy Super Potent Serum Foundation Broad Spectrum SPF 20 3N
- •Capture Totale C.E.L.L. Energy Super Potent Serum Foundation Broad Spectrum SPF 20 4N
- •Phofay Matte Sunscreen Liquid Foundation SPF 30, 1
- •Artistry Ideal Radiance Illuminating CC SPF 50 Broad Spectrum Med/Deep
- •Thefaceshop Natural Sun Oil-Free Sunscreen Broad Spectrum SPF 50
- •EXEL Clarifying LINE Daily Fluid SUN Shield Walnut Brown Color Broad Spectrum SPF 60 PLUS
- •Shiseido Urban Environment Oil-Free Sunscreen SPF 42
- •cle de peau Beaute UV Protective FOR BODY N
- •Facial Skin Shield Broad Spectrum SPF50 Plus
- •Thefaceshop Cushion CC Total Cover SPF 50 Apricot Beige
- •Derma Pella Sunscreen Advance Cream-Gel
- •Simpli DAY All In One SmartCream SPF 42
- •Danahan Moisture Daily Sunscreen Broad Spectrum SPF 50
- •Phofay Matte Sunscreen Liquid Foundation SPF 30 5
- •Artistry Beauty Balm Perfecting Primer SPF 35 Broad Spectrum Sunscreen
- •Artistry Ideal Radiance Illuminating CC SPF 50 Broad Spectrum Sunscreen Deep
- •Capture Totale C.E.L.L. Energy Super Potent Serum Foundation Broad Spectrum SPF 20 0N
- •Capture Totale C.E.L.L. Energy Super Potent Serum Foundation Broad Spectrum SPF 20 7N
- •EXEL Clarifying LINE Daily Fluid SUN Shield White Color Broad Spectrum SPF 60 PLUS
- •Sunscreen Stick
- •Phofay Matte Sunscreen Liquid Foundation SPF 30 4
- •g and h Protect Body
- •Artistry Ideal Radiance Illuminating CC SPF50 Broad Spectrum Sunscreen - Light
- •OHUI Ultimate Cover CC Cushion Compact 02 Natural Beige
- •Babience KIDS Sunscreen pinkfong BABY Shark SPF 50
- •CLE DE PEAU Beaute Correcting VEIL n
- •Shiseido Urban Environment
- •Capture Totale C.E.L.L. Energy Super Potent Serum Foundation Broad Spectrum SPF 20 2CR
- •TOM FORD Shade AND Illuminate SOFT Radiance Foundation Broad Spectrum SPF 50
- •Phofay Matte Sunscreen Liquid Foundation SPF 30 6
- •Prada Reveal Skin Optimizing Foundation Broad Spectrum SPF 17 Sunscreen
- •Ahava Protecting Body Broad Spectrum SPF 30
- •Capture Totale C.E.L.L. Energy Super Potent Serum Foundation Broad Spectrum SPF 20 2N
- •it cosmetics Your Skin But Better CC Plus Natural Matte Color Correcting Pore Refining Full Coverage Skin Balancing Serum Broad Spectrum SPF 40 Sunscreen
- •Futurist Hydra Rescue Moisturizing Makeup Broad Spectrum SPF 45
- •Covergirl TruBlend Base Business Everyday Defense Primer SPF 20
- •Shiseido Future Solution LX Infinite Treatment Primer
- •Capture Totale C.E.L.L. Energy Super Potent Serum Foundation Broad Spectrum SPF 20 5N
- •Capture Totale C.E.L.L. Energy Super Potent Serum Foundation Broad Spectrum SPF 20 6N
- •Sunbeat Procare FPS 50 KIDS
- •TOM FORD Architecture Radiance Hydrating Foundation Broad Spectrum SPF 50
- •Stryx Daily Moisturizer SPF-30
- •Dr.Jucre Rebirth Sun Protection
- •Artistry Ideal Radiance Illuminating CC SPF 50 Broad Spectrum Sunscreen Light/Medium
- •Capture Totale C.E.L.L. Energy Super Potent Serum Foundation Broad Spectrum SPF 20 2W
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
$0.09/gA2B Chem LLC
CountryUnited States
Pack$85.00 / 1 kg
Purity98%
Vendors16 available
Prices reflect listed pack sizes. Small research packs run far above bulk rates.
15 more vendors
| Vendor | Country Supplier country. Where available, shows shipping origin. When the supplier ships from a different country than where they are registered, both are shown. Most suppliers show registration country only. | $/g | Pack | Purity |
|---|---|---|---|---|
| Aaron Chemicals LLC | Hong Kong | $0.09 | 500 g | 98% |
| AA BLOCKS | United States | $0.10 | 1 kg | 98% |
| Angene Chemical | China → Hong Kong | $0.10 | 500 g | 98% |
| Chemscene | United States | $0.12 | 1 kg | — |
| BLD Pharmatech GmbH | Germany | $0.13 | 1 kg | 98% |
| BLD Pharmatech Ltd. | China | $0.13 | 1 kg | 98% |
| BLD Pharmatech Co., Limited | United States | $0.16 | 500 g | 98% |
| Ambeed, Inc. | United States | $0.16 | 500 g | 98% |
| Combi-Blocks, Inc. | United States | $0.25 | 1 kg | 95% |
| Angene International Limited | United States | $0.34 | 500 g | 97% |
| MedChemExpress MCE | Sweden | $3.58 | 25 g | 99.88% |
| Molnova | China | $250.00 | 500 mg | 99% |
| Specs | Netherlands | $2299.00 | 10 mg | 90% |
| Angene | China → Hong Kong | $4266.67 | 30 mg | 98% |
| ChemBridge Corporation | Kazakhstan | $7400.00 | 50 mg | 90% |
Chemical Identity
CAS27503-81-7
PubChem CID33919
DTXSIDDTXSID3038852
FormulaC13H10N2O3S
Mol. Weight274.3 g/mol
SMILESC1=CC=C(C=C1)C2=NC3=C(N2)C=C(C=C3)S(=O)(=O)O
Data Sources
- PubChem · compound 33919Retrieved 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
Brief citations
Ensulizole (CAS 27503-81-7) https://chemicalindependence.com/chemical/27503-81-7/ PubChem: 33919. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/33919 EPA TSCA Inventory: CAS 27503-81-7. 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 293399 for CAS 27503-81-7. Reporting year: 2024. https://usatrade.census.gov/