Methylene blue /Methylthioninium Chloride Impurity 20 CAS 3773-36-2
Purity 97%+In StockPharmacopoeial Impurity Standards
| CAS No. | 3773-36-2 |
| Molecular Formula | C12H8N2OS |
| Molecular Weight | 228.27 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Methylene blue /Methylthioninium Chloride Impurity 20 (CAS 3773-36-2), a pharmacopoeial impurity standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C12H8N2OS. Molecular weight: 228.27 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C12H8N2OS |
| Molecular Weight | 228.27 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Methylene Standards
- Methylene blue /Methylthioninium Chloride Impurity 34 (CAS CATO-C4X-189634)
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Recommended Standards
- Promethazine Impurity 28 (CAS 36144-72-6)
- Tioxazafen (CAS 330459-31-9)
- (4-Oxo-2-pyrrolidin-1-yl-4,5-dihydro-thiazol-5-yl)-acetic acid 0435AF 842976-95-8 C9H12N2O3S (CAS 842976-95-8)
- Erlotinib Impurity 41 (CAS 69088-96-6)
- Esmolol Impurity 9 (CAS CATO-C4X-18919)
- tert-Butyl (6-isobutylpyridin-3-yl)carbamate (CAS 1241675-66-0)
- 5-(5-(Trifluoromethyl)-1,2,4-oxadiazol-3-yl)pyrimidin-2-amine (CAS 1433206-24-6)
- (3-Aminopiperidin-1-yl)(2-chloropyridin-3-yl)methanone hydrochloride (CAS 1353965-62-4)
- 2-(4-(tert-Butyl)phenyl)-5-(5-iodothiophen-2-yl)-1,3,4-oxadiazole (CAS 819863-79-1)
- Pheromone Biosynthesis Activating Neuropeptide (Helicoverpa assulta, Heliothis zea) (CAS 122071-54-9)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 13829788188 / jacky.chen@cato-chem.com