Molekula
Praziquantel
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
Praziquantel is an anthelmintic and antiparasitic drug widely used to treat parasitic worm infections, including schistosomiasis and tapeworm infestations. It works by causing paralysis and subsequent death of the parasites. This chemical has the CAS number 55268-74-1, with a molecular formula of C19H24N2O2 and a molecular weight of 312.41 g/mol. It is stable at ambient storage conditions and carries no signal word for hazard classification. Molekula supplies Praziquantel 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
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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5 g — £42.00 per pack ex VAT · £50.40 inc. VAT
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 | A white crystalline powder or similar |
| Melting Point | 136 - 142°C |
| Heavy metals | ≤20ppm |
| Identification | Conforms to reference |
| Loss on Drying | ≤0.5% |
| Specification | USP36 |
| Solubility | Very slightly soluble in water, freely soluble in alcohol and in chloroform |
| Assay | 98.5- 101.0% |
| Related Substances | A: ≤0.2% B: ≤0.2% C: ≤0.2% |
| Residue on Ignition | ≤0.1% |
| Residual Solvents | Dichloromethane: ≤600 ppm ; Ethyl acetate: ≤5000 ppm ; Ethanol: ≤5000 ppm |
| Phosphate (PO4)3- | The test solution does not have a blue color darker than that of the standard solution |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Melting Point | 136 °C |
| Boiling Point | 1377 °C |
Source: PubChem CID 4891 (Human Metabolome Database (HMDB), DrugBank)
Identification
| Property | Value |
|---|---|
| SKU | 27541701 |
| CAS Number | 55268-74-1 |
| IUPAC Name | 2-(cyclohexanecarbonyl)-3,6,7,11b-tetrahydro-1H-pyrazino[2,1-a]isoquinolin-4-one |
| EC Number | 259-559-6 |
| Molecular Formula | C19H24N2O2 |
| Molecular Weight | 312.41 |
| Exact Mass | 312.1838 |
| SMILES | C1CCC(CC1)C(=O)N2CC3C4=CC=CC=C4CCN3C(=O)C2 |
| InChIKey | FSVJFNAIGNNGKK-UHFFFAOYSA-N |
| InChI | InChI=1S/C19H24N2O2/c22-18-13-20(19(23)15-7-2-1-3-8-15)12-17-16-9-5-4-6-14(16)10-11-21(17)18/h4-6,9,15,17H,1-3,7-8,10-13H2 |
| PubChem CID | 4891 |
| REACH Code | Y110 |
| HTS Code | 29335995 |
| Tariff Code | 2933599590 |
Safety & GHS
Hazard statements
- H303 May be harmful if swallowed
- H412 Harmful to aquatic life with long lasting effects
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P264 Wash thoroughly after handling
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+330 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting
- P501 Dispose of contents/container to an approved waste disposal plant
Documents
Safety Data Sheets (SDS)
Available in English, English (US), 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
- 2-cyclohexanecarbonyl-1H,2H,3H,4H,6H,7H,11bH-piperazino[2,1-a]isoquinolin-4-one
- Biltricide
- Cysticide
- Droncit
- Embay 8440
- Prasiquantel
- prazicuantel
- Praziquantel Injection
- Praziquantel Tablets
- Praziquantelum
Frequently asked questions
What is praziquantel used for?
Praziquantel is primarily used as an antiparasitic medication to treat infections caused by tapeworms (e.g., *Taenia* and *Echinococcus*) and schistosomiasis (bilharzia).
What is the chemical formula and molecular weight of praziquantel?
The chemical formula is **C₁₉H₂₄N₂O₂**, and the molecular weight is **312.41 g/mol**.
How should praziquantel be stored?
Store praziquantel at **ambient temperature** in a dry, well-ventilated place, away from direct sunlight and moisture.
What grades or purities of praziquantel does Molekula supply?
Molekula supplies **pharmaceutical-grade (USP/EP/BP compliant) and research-grade** praziquantel, depending on the application.
Can Molekula supply praziquantel in bulk quantities?
Yes, Molekula can supply praziquantel in **bulk quantities** (minimum order quantities vary by grade; contact us for details).
What documentation comes with a praziquantel order?
Each order includes a **Certificate of Analysis (CoA)**, Safety Data Sheet (SDS), and batch-specific documentation (e.g., purity, heavy metals, and microbial testing reports).
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.