Molekula
Chlorothiazide - USP CRS
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
Chlorothiazide USP CRS is a thiazide diuretic used primarily in pharmaceuticals to treat hypertension and edema by promoting the excretion of water and electrolytes. This reference standard, meeting USP specifications, has a CAS number of 58-94-6, molecular formula C7H6ClN3O4S2, and a molecular weight of 295.72. It must be stored between 2 to 8°C and carries a "Danger" signal word because it is a respiratory sensitiser that may cause allergy or asthma symptoms or breathing difficulties if inhaled (H334); it may also cause an allergic skin reaction (H317). Molekula supplies Chlorothiazide USP CRS 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 | Undamaged packaging |
| Conforms to USP | Conforms to USP monograph |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | 2 to 8 °C |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Crystals |
| Odour | Odorless |
| Melting Point | 350 °C |
| pKa | pKa = 6.85 |
| log P (octanol/water) | -0.24 |
Source: PubChem CID 2720 (HSDB, Human Metabolome Database (HMDB), DrugBank)
Identification
| Property | Value |
|---|---|
| SKU | 90037425 |
| CAS Number | 58-94-6 |
| IUPAC Name | 6-chloro-1,1-dioxo-4H-1lambda6,2,4-benzothiadiazine-7-sulfonamide |
| EC Number | 200-404-9 |
| Molecular Formula | C7H6ClN3O4S2 |
| Molecular Weight | 295.72 |
| Exact Mass | 294.9488 |
| SMILES | C1=C2C(=CC(=C1Cl)S(=O)(=O)N)S(=O)(=O)N=CN2 |
| InChIKey | JBMKAUGHUNFTOL-UHFFFAOYSA-N |
| InChI | InChI=1S/C7H6ClN3O4S2/c8-4-1-5-7(2-6(4)16(9,12)13)17(14,15)11-3-10-5/h1-3H,(H,10,11)(H2,9,12,13) |
| PubChem CID | 2720 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29359095 |
| Tariff Code | 2935909099 |
Safety & GHS
-
Serious Health Hazard
GHS08
Hazard statements
- H317 May cause an allergic skin reaction
- H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled
- USH01 May form combustible dust concentrations in air
Precautionary statements
- P210 Keep away from heat/sparks/open flames/hot surfaces - No smoking
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P333+313 IF skin irritation or a rash occurs: Get medical advice/attention
- P337+313 If eye irritation persists get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, 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
- Chlorosal
- Chlorothiazid
- chlorothiazide
- Chlorthiazide
- Chlortiazid
- Chlorurit
- Chlotride
- Clotride
- Diuril
- Flumen
Frequently asked questions
What is Chlorothiazide USP CRS used for?
Chlorothiazide USP CRS is primarily used as a reference standard for analytical testing in pharmaceutical quality control, ensuring batch consistency and compliance with USP specifications.
What is the chemical formula and molecular weight of Chlorothiazide?
The chemical formula is C7H6ClN3O4S2 and the molecular weight is 295.72 g/mol.
How should Chlorothiazide USP CRS be stored?
Store at 2 to 8°C in a dry, well-ventilated area, away from direct sunlight and incompatible substances.
What grade of Chlorothiazide does Molekula supply?
Molekula supplies Chlorothiazide USP CRS (Certified Reference Standard), suitable for high-accuracy analytical applications.
Can Molekula supply Chlorothiazide USP CRS in bulk quantities?
Bulk quantities may be available upon request—please contact our sales team for pricing and lead times.
What documentation comes with a Chlorothiazide USP CRS order?
Each order includes a Certificate of Analysis (CoA), Safety Data Sheet (SDS), and batch-specific documentation for traceability.
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.