Molekula
Niclosamide
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Niclosamide is an organochlorine compound primarily used as an antiparasitic agent in veterinary medicine, agriculture, and as a research chemical for studying mitochondrial function and antimicrobial properties. It is the active ingredient in human and veterinary anthelmintic medicines and, often as its ethanolamine salt, is applied as a molluscicide to control freshwater snails. It is also employed in some industrial applications for its fungicidal and algicidal effects. This chemical has a CAS number of 50-65-7, with the molecular formula C13H8Cl2N2O4 and a molecular weight of 327.12. It is stable at ambient storage conditions but requires handling with caution, as indicated by its warning signal word. Molekula supplies Niclosamide from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Light yellow powder |
| Melting Point | 228-232°C |
| Heavy metals | ≤20ppm |
| Identification | Conforms to reference |
| Loss on Drying | ≤0.5% |
| Chlorides | ≤400ppm |
| Residue on Ignition | ≤0.1% |
| Assay (dried basis) | ≥98% |
| 2-Chloro-4-nitroaniline | ≤500ppm |
| 5-Chlorosalicylic acid | Complies |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 9 |
| Packing Group | III |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Pale, yellow crystals |
| Melting Point | 230 °C |
| log P (octanol/water) | 10 |
Source: PubChem CID 4477 (HSDB, DrugBank)
Identification
| Property | Value |
|---|---|
| SKU | 90029656 |
| CAS Number | 50-65-7 |
| IUPAC Name | 5-chloro-N-(2-chloro-4-nitrophenyl)-2-hydroxybenzamide |
| EC Number | 200-056-8 |
| Molecular Formula | C13H8Cl2N2O4 |
| Molecular Weight | 327.12 |
| Exact Mass | 325.9861 |
| SMILES | C1=CC(=C(C=C1[N+](=O)[O-])Cl)NC(=O)C2=C(C=CC(=C2)Cl)O |
| InChIKey | RJMUSRYZPJIFPJ-UHFFFAOYSA-N |
| InChI | InChI=1S/C13H8Cl2N2O4/c14-7-1-4-12(18)9(5-7)13(19)16-11-3-2-8(17(20)21)6-10(11)15/h1-6,18H,(H,16,19) |
| PubChem CID | 4477 |
| UN Number | UN3077 |
| REACH Code | Y110 |
| HTS Code | 2924.29.77.90 |
| Tariff Code | 2924297099 |
Safety & GHS
-
Hazardous to the Environment
GHS09
Hazard statements
- H400 Very toxic to aquatic life
- H410 Very toxic to aquatic life with long lasting effects
Precautionary statements
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- 5-Chloro-N-(2-chloro-4-nitrophenyl)-2-hydroxybenzamide
- Cestocid
- Fenasal
- Lintex
- Mansonil
- Niclocide
- Phenasal
- Tredemine
- Vermitid
- Yomesan
Frequently asked questions
What is niclosamide primarily used for?
Niclosamide is primarily used as an antiparasitic agent, particularly in veterinary medicine for treating tapeworm infections in animals, and historically in human medicine for similar purposes.
What is the chemical formula and molecular weight of niclosamide?
The chemical formula is **C13H8Cl2N2O4**, and the molecular weight is **327.12 g/mol**.
How should niclosamide be stored?
Store niclosamide at **ambient temperature** in a dry, well-ventilated area, away from incompatible substances.
What grades or purity levels of niclosamide does Molekula supply?
Molekula supplies niclosamide in **pharmaceutical-grade purity** (typically ≥98% HPLC), suitable for research and development applications.
Can Molekula supply niclosamide in bulk quantities?
Yes, Molekula can provide niclosamide in bulk, with quantities and packaging tailored to your specific requirements—please contact us for details.
What documentation comes with a niclosamide order?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS), and a product specification sheet detailing purity, identity, and compliance with regulatory standards.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.