7-Benzothiazolesulfonic acid, 2-[4-[2-(4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl)diazenyl]phenyl]-6-methyl-, sodium salt CAS 21493-04-9
| CAS No. | 21493-04-9 |
| Molecular Formula | C18H14N5O4S2 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 7-Benzothiazolesulfonic acid, 2-[4-[2-(4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl)diazenyl]phenyl]-6-methyl-, sodium salt is closely related to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 7-Benzothiazolesulfonic acid, 2-[4-[2-(4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl)diazenyl]phenyl]-6-methyl-, sodium salt (CAS 21493-04-9), a certified reference material (molecular formula C18H14N5O4S2Na, MW 451.45 g/mol) for analytical method development and quality control.
Owing to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, 7-Benzothiazolesulfonic acid, 2-[4-[2-(4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl)diazenyl]phenyl]-6-methyl-, sodium salt is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 451.45 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C18H14N5O4S2 Na |
| Molecular Weight | 451.45 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 14.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 2 |
Related Benzothiazolesulfonic Standards
Recommended Standards
- 3,5-Dimethyl-1-phenyl-1h-pyrazol-4-amine (CAS 21683-30-7)
- 3-(5-Cyclobutyl-1,2,4-oxadiazol-3-yl)piperidine hydrochloride (CAS 1393330-63-6)
- Docosyl (9Z,12Z,15Z)-octadeca-9,12,15-trienoate (CAS 1613724-10-9)
- 4,5,6,7-Tetrahydro-1-benzothiophen-4-amine (CAS 58094-17-0)
- Hexamethylenetetramine, Compound With Allyl Iodide (CAS 36895-62-2)
- 1-(2-Nitrophenyl)-1H-pyrazole-5-carbaldehyde (CAS 1269292-09-2)
- (5-Chloro-2-methoxyphenyl)methanol (CAS 7035-10-1)
- n-(2-Bromobenzyl)-2-methylbutan-1-amine (CAS 1249306-19-1)
- 2-(2-(2,3,4-Trifluorophenoxy)ethyl)-1,3-dioxolane (CAS 1443320-81-7)
- Peptide 435 (CAS CATO-CPTD788435)
Why CATO?
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