Molekula
Cetirizine dihydrochloride
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
Cetirizine dihydrochloride is a second-generation antihistamine used to treat allergic conditions such as hay fever, urticaria, and allergic dermatitis. It works by blocking histamine H1 receptors, reducing symptoms like itching, sneezing, and runny nose. Available in powder form, it is stable at ambient temperatures. CAS: 83881-52-1, Molecular Formula: C21H25ClN2O3 · 2HCl, Molecular Weight: 461.81 g/mol. Signal word: Warning. Molekula supplies Cetirizine dihydrochloride 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 — $170.50 per pack
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 | White powder |
| Heavy metals | ≤ 10ppm |
| Loss on Drying | ≤ 0.5% |
| Assay | ≥ 99.0% |
| Residue on Ignition | ≤ 0.2% |
| Individual impurity | ≤ 0.1% |
| Total Impurities | ≤ 0.3% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| SKU | 13368529 |
| CAS Number | 83881-52-1 |
| IUPAC Name | 2-[2-[4-[(4-chlorophenyl)-phenylmethyl]piperazin-1-yl]ethoxy]acetic acid;dihydrochloride |
| Molecular Formula | C21H25ClN2O3 · 2HCl |
| Molecular Weight | 461.81 |
| Exact Mass | 460.1087 |
| SMILES | C1CN(CCN1CCOCC(=O)O)C(C2=CC=CC=C2)C3=CC=C(C=C3)Cl.Cl.Cl |
| InChIKey | PGLIUCLTXOYQMV-UHFFFAOYSA-N |
| InChI | InChI=1S/C21H25ClN2O3.2ClH/c22-19-8-6-18(7-9-19)21(17-4-2-1-3-5-17)24-12-10-23(11-13-24)14-15-27-16-20(25)26;;/h1-9,21H,10-16H2,(H,25,26);2*1H |
| PubChem CID | 55182 |
| REACH Code | Y110 |
| HTS Code | 29335995 |
| Tariff Code | 2933599590 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H302 Harmful if swallowed
Precautionary statements
- P264 Wash thoroughly after handling
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+312 IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell
Documents
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
- Allergy relief
- Alleroff
- Cetirizine HCl
- CETIRIZINE HYDROCHLORIDE
- Cetrine
- Formistin
- P 071
- Zerviate
- Zyrtec Allergy
- Zyrtec Hives Relief
Frequently asked questions
What is cetirizine dihydrochloride used for?
It is primarily used as an antihistamine in the treatment of allergic conditions such as hay fever, urticaria, and other allergic dermatoses.
What is the chemical formula and molecular weight of cetirizine dihydrochloride?
The formula is C21H25ClN2O3 · 2HCl with a molecular weight of 461.81 g/mol.
How should cetirizine dihydrochloride be stored?
It should be stored at ambient temperature, protected from moisture and light.
What grade is available for cetirizine dihydrochloride?
It is available in pharmaceutical grade, suitable for use in drug development and formulation.
Can Molekula supply cetirizine dihydrochloride in bulk?
Yes, Molekula can supply cetirizine dihydrochloride in bulk quantities—please contact our sales team for pricing and availability.
What documentation comes with an order of cetirizine dihydrochloride?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS); additional documentation can be provided upon request.
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.