3,7-Diaminophenothiazin-5-ium chloride CAS 581-64-6
| CAS No. | 581-64-6 |
| Molecular Formula | C12H10N3S |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3,7-Diaminophenothiazin-5-ium chloride (C12H10N3SCl) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality, chlorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
CATO supplies 3,7-Diaminophenothiazin-5-ium chloride (CAS 581-64-6), a certified reference material (molecular formula C12H10N3SCl, MW 263.74 g/mol) for analytical method development and quality control.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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 | C12H10N3S Cl |
| Molecular Weight | 263.74 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Recommended Standards
- 2-(2-(Pyrrolidin-1-yl)phenyl)acetic acid (CAS 136916-22-8)
- 6-Methyl-2,3-dihydro-1H-pyrrolo[3,4-c]pyridin-7-amine (CAS 115121-20-5)
- 3-Iodo-4-(trifluoromethyl)pyridine (CAS 625115-02-8)
- Estradiol Impurity 34 (CAS 3563-27-7)
- 1-methyl-2-oxo-1,2,3,4-tetrahydroquinoline-6-carbaldehyde (CAS 1343210-73-0)
- Hydrocortisone EP Impurity A (CAS 50-24-8)
- 4-Chloro-2-(4-methoxyphenyl)-5-[methyl(1H-pyrrol-1-yl)amino]-2,3-dihydropyridazin-3-one (CAS 320421-73-6)
- n-(2-Chloro-6-iodo-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-3-yl)pivalamide (CAS 1357387-98-4)
- (4-((2-Ethylhexyl)oxy)-2,5-dimethylphenyl)boronic acid (CAS 409359-66-6)
- Glucagon (1-29) (CAS 16941-32-5)
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