PTCBI (cis-and trans-mixture) CAS 79534-91-1
| CAS No. | 79534-91-1 |
| Molecular Formula | 2*C36H16N4O2 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
PTCBI (cis-and trans-mixture) (CAS 79534-91-1), molecular formula C36H16N4O2 and molecular weight 536.55 g/mol, is a CATO reference standard with documented purity and traceability.
PTCBI (cis-and trans-mixture) (C36H16N4O2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; 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.
As a certified reference material (CRM), PTCBI (cis-and trans-mixture) 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 | 2*C36H16N4O2 |
| Molecular Weight | 536.55 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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 |
| Degree of Unsaturation (DBE) | 31.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1979 |
| Nitrogen Atoms | 4 |
Recommended Standards
- 1-Methylfluoranthene (CAS 25889-60-5)
- 3-methylbut-3-en-1-yl benzoate (CAS 5205-12-9)
- 4-Bromo-2-chloro-5-(trifluoromethyl)pyridine (CAS 1211520-18-1)
- 4,4-Dimethyl-5-phenyl-4,5-dihydroisoxazol-5-ol (CAS 53009-30-6)
- 4-Bromo-5-methylisothiazole (CAS 1547081-09-3)
- Boc-N-Amido-PEG4-propargyl (CAS 1219810-90-8)
- Methyl 2-(2-fluoro-4-methylphenyl)propanoate (CAS 1241405-27-5)
- 2-(1H-Benzimidazol-2-yl)ethylamine (CAS 29518-68-1)
- 1-(6-Methylpyrimidin-4-yl)cyclopropane-1-carboxylic acid (CAS 1509080-02-7)
- Semaglutide impurity 249 (CAS CATO-C4X-2226249)
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