Methylene blue /Methylthioninium Chloride Impurity 36 CAS CATO-C4X-189636
| CAS No. | CATO-C4X-189636 |
| Molecular Formula | C16H17N3OS |
| Molecular Weight | 299.39 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Methylene blue /Methylthioninium Chloride Impurity 36 is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Methylene blue /Methylthioninium Chloride Impurity 36 (CAS CATO-C4X-189636) is a certified pharmaceutical impurity reference standard with the molecular formula C16H17N3OS and a molecular weight of 299.39 g/mol.
Methylene blue /Methylthioninium Chloride Impurity 36 (C16H17N3OS) contains a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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 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.
As a certified reference material (CRM), Methylene blue /Methylthioninium Chloride Impurity 36 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C16H17N3OS |
| Molecular Weight | 299.39 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 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Methylene Standards
- Methylene blue Impurity 15 (CAS CATO-C4X-189615)
- Methylene blue /Methylthioninium Chloride Impurity 33 (CAS CATO-C4X-189633)
- 4-Methylene-3,5-diphenyl-5-(1,2,2-trimethylhydrazinyl)-4,5-dihydroisoxazole (CAS 62033-10-7)
- Methylene(2,4,6-tri-tert-butylphenyl)phosphane (CAS 84114-18-1)
- Methylene blue /Methylthioninium Chloride Impurity 39 (CAS CATO-C4X-189639)
- 17-Methylene-5-androsten-3β-ol (CAS 846-44-6)
- Methylene blue /Methylthioninium Chloride Impurity 37 (CAS CATO-C4X-189637)
- Methylene blue /Methylthioninium Chloride Impurity 35 (CAS CATO-C4X-189635)
Recommended Standards
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- Citalopram EP Impurity M (CAS 440121-09-5)
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- 3-Methoxyisothiazole-4-carboxylic acid (CAS 60666-91-3)
- N-(5-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl)morpholin-4-amine (CAS 1073354-38-7)
- HA Peptide (CAS 92000-76-5)
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