Methylene blue /Methylthioninium Chloride Impurity 24 CAS CATO-C4X-189624
| CAS No. | CATO-C4X-189624 |
| Molecular Formula | C13H12N3S |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Methylene blue /Methylthioninium Chloride Impurity 24 is closely related to a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Methylene blue /Methylthioninium Chloride Impurity 24 (CAS CATO-C4X-189624) is a certified pharmaceutical impurity reference standard with the molecular formula C13H12N3SCl and a molecular weight of 277.77 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality, chlorine substitution, Methylene blue /Methylthioninium Chloride Impurity 24 is typically pale yellow to yellow low-melting solid. Its solid-state physicochemical attributes — including a molecular weight of 277.77 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
CATO manufactures Methylene blue /Methylthioninium Chloride Impurity 24 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C13H12N3S Cl |
| Molecular Weight | 277.77 g/mol |
| Purity | 95% |
| 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 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Methylene Standards
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- 2-Methylene-1,3,6-trioxocane (CAS 105649-50-1)
- 6-Methyl-3-methylene-3,4-dihydroquinoxalin-2(1H)-one (CAS 106480-88-0)
- 5-Methylene-2(5H)-furanone (CAS 108-28-1)
- 3-(2-Methylene-4-phenylbutanoyl)oxazol-2(3H)-one (CAS 1151767-07-5)
- (Methylene-d2)gibberellin A5 (CAS 120396-32-9)
Recommended Standards
- Riluzole Impurity 7 (CAS 1456696-94-8)
- Azilsartan Impurity 126 (CAS 1604812-36-3)
- Cefmetazole Impurity 57 (CAS CATO-C4X-150757)
- 1-(3-Methylphenethyl)cyclopropan-1-ol (CAS 1248661-36-0)
- 2-[5-(2-methoxyphenyl)-1,3,4-oxadiazol-2-yl]acetic acid (CAS 415679-26-4)
- 2-((3-(1,3-Dioxo-(1H)benzo[de]isoquinolin-2(3H)-yl)propyl)thio)benzoic Acid (CAS 325850-81-5)
- Pramipexole Impurity 42 (CAS 106006-83-1)
- 5-(chloromethyl)-3-(1H-1,2,4-triazol-3-yl)-1,2,4-oxadiazole (CAS 953751-07-0)
- 4,8-Dimethyl-2-(tetramethyl-1,3,2-dioxaborolan-2-yl)-1,3,6,2-dioxazaborocane (CAS 1262977-13-8)
- Semaglutide impurity 266 (CAS CATO-C4X-2226266)
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 18665070610 / Nicole.chen@cato-chem.com