Sulfamethoxazole-d4

Name: Sulfamethoxazole-d4
Brand: Vaqora Chemicals
SKU: VQ-042305

About Sulfamethoxazole-d4

Sulfamethoxazole-d4 (CAS 1020719-86-1) is a stable isotope labelled analogue related to Sulfamethoxazole offered by Vaqora Chemicals. With the molecular formula C10H11N3O3S, it has a molar mass of 257.3 g/mol. Systematically, it is named 4-amino-2,3,5,6-tetradeuterio-N-(5-methyl-1,2-oxazol-3-yl)benzenesulfonamide. Alternative names: Sulfamethoxazole D4 (benzene D4) and Sulfamethoxazole-d4 (benzene-d4).

It is supplied as a solid. Store the standard in its sealed vial, protected from light and moisture, and follow the storage condition printed on the COA. Handle it with standard laboratory precautions and appropriate personal protective equipment.

Its mass shift relative to the unlabelled analyte makes it a dependable internal standard for LC-MS/MS assays, improving accuracy in bioanalysis, therapeutic drug monitoring and method validation. It is used across pharmaceutical manufacturing and academic and industrial research.

Available in 10 mg, 25 mg, 50 mg and 100 mg packs, Sulfamethoxazole-d4 is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

LC-MS/MS internal standard
Bioanalytical quantitation
Pharmacokinetic studies

Industries

Related to Sulfamethoxazole

View every impurity, metabolite and intermediate we list for Sulfamethoxazole.

Sulfamethoxazole impurities

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Sulfamethoxazole-d4
Catalogue No.	VQ-042305
CAS Number	1020719-86-1
IUPAC name	4-amino-2,3,5,6-tetradeuterio-N-(5-methyl-1,2-oxazol-3-yl)benzenesulfonamide
Molecular formula	C₁₀H₁₁N₃O₃S
Molecular weight	257.3 g/mol
Exact mass	257.0772
Grade	Reference Standard
HSN code	38229090
InChIKey	JLKIGFTWXXRPMT-QFFDRWTDSA-N
SMILES	[2H]C1=C(C(=C(C(=C1N)[2H])[2H])S(=O)(=O)NC2=NOC(=C2)C)[2H]
PubChem CID	45040440

Physical properties
Physical form	Solid
LogP (XLogP3)	0.9
H-bond donors / acceptors	2 / 6
TPSA	107 Å²
Synonyms	Sulfamethoxazole D4 (benzene D4), Sulfamethoxazole-d4 (benzene-d4), Ro 4-2130 D4, 4-Amino-N-(5-methyl-3-isoxazolyl)benzene-2,3,5,6-d4-sulfonamide, 4-amino-N-(5-methylisoxazol-3-yl)benzene-2,3,5,6-d4-sulfonamide, 4-amino-2,3,5,6-tetradeuterio-N-(5-methylisoxazol-3-yl)benzenesulfonamide, 4-Amino-N-(5-methyl-1,2-oxazol-3-yl)(~2~H_4_)benzene-1-sulfonamide

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of Sulfamethoxazole-d4?

The CAS Registry Number of Sulfamethoxazole-d4 is 1020719-86-1. It is also known as Sulfamethoxazole D4 (benzene D4), Sulfamethoxazole-d4 (benzene-d4), Ro 4-2130 D4.

What is the molecular formula and molecular weight of Sulfamethoxazole-d4?

Sulfamethoxazole-d4 has the molecular formula C10H11N3O3S and a molecular weight of 257.3 g/mol. Its IUPAC name is 4-amino-2,3,5,6-tetradeuterio-N-(5-methyl-1,2-oxazol-3-yl)benzenesulfonamide.

What is Sulfamethoxazole-d4 used for?

Sulfamethoxazole-d4 is supplied as a characterised reference material related to Sulfamethoxazole. It is used for analytical method development and validation (AMV), impurity profiling, stability studies and quality control, and in ANDA/DMF regulatory filings.

Which grade and pack sizes of Sulfamethoxazole-d4 can I order?

We supply Sulfamethoxazole-d4 in Reference Standard grade, in 10 mg, 25 mg, 50 mg, 100 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Sulfamethoxazole-d4?

Yes. Every lot of Sulfamethoxazole-d4 is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Sulfamethoxazole-d4 be shipped internationally?

Yes. We export Sulfamethoxazole-d4 worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.