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API Reference Standards

Chlorthalidone USP

Reference StandardIn stock

Order Chlorthalidone USP (CAS 77-36-1) online at Zemixal: C14H11ClN2O4S, COA and SDS with every lot, worldwide shipping.

Pack sizes
Chlorthalidone USP chemical structure
CAS number77-36-1
FormulaC14H11ClN2O4S
Molar mass338.8 g/mol
Physical formSolid
HS code38229090
InChIKeyJIVPVXMEBJLZRO-UHFFFAOYSA-N
IUPAC name2-chloro-5-(1-hydroxy-3-oxo-2H-isoindol-1-yl)benzenesulfonamide

About Chlorthalidone USP

Analytical teams working on Chlorthalidone use Chlorthalidone USP as a qualified comparison standard. For your records (Reference Standard), the material is defined by CAS 77-36-1, formula C14H11ClN2O4S and molar mass 338.8 g/mol. It is handled as a solid.

Where it is used

  • Identification & assay
  • Method development & validation
  • QC reference material

Handling and storage

Hazard communication follows GHS (Warning: H315, H319 and H335). Our SDS lists exposure controls and first-aid measures.

Order it in 10 mg, 25 mg, 50 mg, 100 mg and 250 mg packs or ask for a bulk quotation. You receive a certificate of analysis with characterisation data with each order. Add it to your quote list and our team replies with price, lead time and shipping options within one business day.

Reference standards for Chlorthalidone

See every impurity, metabolite and related compound we list for this API.

Chlorthalidone standards

Typical uses

  • Identification & assay
  • Method development & validation
  • QC reference material

Applications

Pharmaceutical Manufacturing and QCResearch Labs and Universities

Grade guides

USP Grade (United States Pharmacopeia)

Specifications and identifiers

Specifications of Chlorthalidone USP
Product nameChlorthalidone USP
Catalogue numberZX-006464
CAS number77-36-1
IUPAC name2-chloro-5-(1-hydroxy-3-oxo-2H-isoindol-1-yl)benzenesulfonamide
Molecular formulaC14H11ClN2O4S
Molar mass338.8 g/mol
Exact mass338.0128
GradeReference Standard
Physical formSolid
XLogP30.9
H-bond donors / acceptors3 / 5
Topological polar surface area118 Ų
HS code38229090
InChIKeyJIVPVXMEBJLZRO-UHFFFAOYSA-N
SMILESC1=CC=C2C(=C1)C(=O)NC2(C3=CC(=C(C=C3)Cl)S(=O)(=O)N)O
PubChem CID2732
Synonyms2-Chloro-5-(2,3-dihydro-1-hydroxy-3-oxo-1H-isoindol-1-yl)-benzenesulfonamide, 3-Hydroxy-3-[4-chloro-3-sulfamylphenyl]phthalimidine, Chlorthalidon, Chlorthalidone, Hygroton, Igroton, Phthalamudine, Zambesil, Natriuran, Oradil, Oxodolin, Racemic chlorthalidone

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

GHS07 Irritant or harmful
Irritant or harmful

Signal word Warning

  • H315Causes skin irritation
  • H319Causes serious eye irritation
  • H335May cause respiratory irritation

Precautionary statements P261, P264, P264 + P265, P271, P280, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P332 + P317, P337 + P317, P362 + P364, P403 + P233, P405, P501

Classification summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.

Pack sizes

Pack sizes of Chlorthalidone USP
10 mgQuoted on request
25 mgQuoted on request
50 mgQuoted on request
100 mgQuoted on request
250 mgQuoted on request
500 mgQuoted on request
1 gQuoted on request

Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.

Questions about Chlorthalidone USP

Which CAS number identifies Chlorthalidone USP?
Chlorthalidone USP is registered under CAS 77-36-1. You may also see it listed as 2-Chloro-5-(2,3-dihydro-1-hydroxy-3-oxo-1H-isoindol-1-yl)-benzenesulfonamide, 3-Hydroxy-3-[4-chloro-3-sulfamylphenyl]phthalimidine, Chlorthalidon. Our catalogue number for this item is ZX-006464.
What are the formula and molar mass of Chlorthalidone USP?
For Chlorthalidone USP, its formula is C14H11ClN2O4S and its molar mass is 338.8 g/mol. The systematic (IUPAC) name is 2-chloro-5-(1-hydroxy-3-oxo-2H-isoindol-1-yl)benzenesulfonamide. InChIKey JIVPVXMEBJLZRO-UHFFFAOYSA-N lets you match it in any structure database.
How is Chlorthalidone USP used in pharmaceutical QC?
Chlorthalidone USP is a characterised reference material linked to Chlorthalidone. Laboratories use it to identify and quantify this impurity during method development and validation, stability work, batch release testing and regulatory submissions.
What grade and pack sizes are available for Chlorthalidone USP?
This listing is Reference Standard grade. Standard packs are 10 mg, 25 mg, 50 mg, 100 mg, 250 mg, 500 mg. Larger quantities and custom packing can be quoted on request.
Which documents come with Chlorthalidone USP?
Each lot ships with a batch certificate of analysis and a 16-section GHS safety data sheet. A typical COA or specification sheet can be shared with the quotation before you order.
Can Zemixal ship Chlorthalidone USP to my country?
Yes. Because Chlorthalidone USP is classed as hazardous, it travels in UN-approved packaging as dangerous goods under IATA or IMDG rules, with the export paperwork your broker needs.

Other grades with CAS 77-36-1

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