Molekula
Chlorthalidone - 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
Chlorthalidone USP CRS is a thiazide diuretic used primarily to treat hypertension and fluid retention by promoting the excretion of sodium and water. It is a reference standard for analytical testing and quality control in pharmaceutical manufacturing. This chemical has a CAS number of 77-36-1, molecular formula C14H11ClN2O4S, and a molecular weight of 338.77. It should be stored at 2 to 8°C and handled with caution, as indicated by its warning signal word. Molekula supplies Chlorthalidone 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.
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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 to light yellow powder |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | 2 to 8 °C |
| Acidity | Base |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | White to yellowish-white crystalline powder |
| Melting Point | 239 °C |
| log P (octanol/water) | 0.85 |
Source: PubChem CID 2732 (HSDB, DrugBank)
Identification
| Property | Value |
|---|---|
| SKU | 90037184 |
| CAS Number | 77-36-1 |
| IUPAC Name | 2-chloro-5-(1-hydroxy-3-oxo-2H-isoindol-1-yl)benzenesulfonamide |
| EC Number | 201-022-5 |
| Molecular Formula | C14H11ClN2O4S |
| Molecular Weight | 338.77 |
| Exact Mass | 338.0128 |
| SMILES | C1=CC=C2C(=C1)C(=O)NC2(C3=CC(=C(C=C3)Cl)S(=O)(=O)N)O |
| InChIKey | JIVPVXMEBJLZRO-UHFFFAOYSA-N |
| InChI | InChI=1S/C14H11ClN2O4S/c15-11-6-5-8(7-12(11)22(16,20)21)14(19)10-4-2-1-3-9(10)13(18)17-14/h1-7,19H,(H,17,18)(H2,16,20,21) |
| PubChem CID | 2732 |
| REACH Code | Y110 |
| HTS Code | 2935909500 |
| Tariff Code | 2935909099 |
Safety & GHS
-
Health Hazard
GHS07
-
Serious Health Hazard
GHS08
Hazard statements
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
- H361 Suspected of damaging fertility or the unborn child
Precautionary statements
- 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
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P308+313 IF exposed or concerned: 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
- Chlorothalidone
- Chlorphthalidolone
- Chlortalidone
- Chlorthalidon
- chlorthalidone
- Hygroton
- Natriuran
- Phthalamodine
- Phthalamudine
- Thalitone
Frequently asked questions
What is Chlorthalidone USP CRS primarily used for?
Chlorthalidone USP CRS is used as a reference standard for analytical testing in pharmaceutical quality control, particularly for verifying the identity and purity of Chlorthalidone in drug formulations.
What is the chemical formula and molecular weight of Chlorthalidone?
The chemical formula is **C14H11ClN2O4S**, and the molecular weight is **338.77 g/mol**.
How should Chlorthalidone USP CRS be stored?
Store at **2 to 8°C** in a dry, well-ventilated area, protected from light and moisture.
What grade of Chlorthalidone is available from Molekula?
Molekula supplies **USP CRS (United States Pharmacopeia Certified Reference Standard)** grade Chlorthalidone.
Can Molekula supply Chlorthalidone USP CRS in bulk quantities?
Bulk quantities may be available upon request—please contact Molekula’s sales team for pricing and minimum order quantities.
What documentation comes with a Chlorthalidone USP CRS order?
Each order includes a **Certificate of Analysis (CoA)**, **Material Safety Data Sheet (MSDS)**, and **batch-specific documentation** confirming USP CRS compliance.
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.