2,3-Bis(4-methoxyphenyl)-5-phenyltetrazolium Chloride CAS 104497-79-2
| CAS No. | 104497-79-2 |
| Molecular Formula | C21H21N4O2 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
2,3-Bis(4-methoxyphenyl)-5-phenyltetrazolium Chloride (CAS 104497-79-2) is a high-purity analytical reference standard with the molecular formula C21H21N4O2Cl and a molecular weight of 396.88 g/mol.
The molecular framework of 2,3-Bis(4-methoxyphenyl)-5-phenyltetrazolium Chloride (C21H21N4O2Cl) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C21H21N4O2 Cl |
| Molecular Weight | 396.88 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related Bis Standards
- 3-(3-Methoxyphenyl)isonicotinic acid (CAS 100004-80-6)
- 3-(2-Methoxyphenyl)isonicotinic acid (CAS 100004-81-7)
- 2-(3-Methoxyphenyl)isonicotinic acid (CAS 100004-95-3)
- 2-(3-Methoxyphenyl)benzo[d]thiazole (CAS 10002-44-5)
- 4-(5-(4-Methoxyphenyl)oxazol-2-yl)aniline (CAS 10004-75-8)
- 2-(4-Methoxyphenyl)-6-(methylthio)-4H-thiopyran-4-one (CAS 1000574-20-8)
- Ethyl 2-{[2-(4-methoxyphenyl)-4-oxo-4H-chromen-3-yl]oxy}acetate (CAS 100064-06-0)
- Methyl 5-(2-methoxyphenyl)-1H-pyrrole-2-carboxylate (CAS 1000682-34-7)
Recommended Standards
- Methyl 4-fluoro-3-methylbenzo[b]thiophene-2-carboxylate (CAS 1489601-73-1)
- 5-(3-Bromophenyl)-3-(chloromethyl)-1,2,4-oxadiazole (CAS 657423-61-5)
- 5-(4-(Propylsulfonyl)piperazin-1-yl)-3-(pyrrolidin-1-yl)pyridazine (CAS 1797251-82-1)
- Ethyl 5-acetyl-2-hydroxybenzoate (CAS 16475-93-7)
- 1-[(4-Methylphenyl)methyl]-4-(pyridin-2-yl)-4,5-dihydro-1H-1,2,4-triazol-5-one (CAS 343373-45-5)
- rac-(1R,2S,3R)-3-ethoxy-2-(methylsulfanyl)cyclobutan-1-amine hydrochloride (CAS 1909294-80-9)
- Grela 1st Generation (CAS 625082-83-9)
- 2'-Isopropyl-[1,1'-biphenyl]-3-thiol (CAS 1443306-03-3)
- Cefcapene Impurity 37 (CAS CATO-C4X-182437)
- Des-Gln24-Tirzepatide (CAS CATO-CPTD788949)
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