4,4'-([1,2,5]Thiadiazolo[3,4-c]pyridine-4,7-diyl)dibenzaldehyde CAS 2757730-01-9
| CAS No. | 2757730-01-9 |
| Molecular Formula | C19H11N3O2S |
| Molecular Weight | 345.37 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4,4'-([1,2,5]Thiadiazolo[3,4-c]pyridine-4,7-diyl)dibenzaldehyde (CAS 2757730-01-9), molecular formula C19H11N3O2S and molecular weight 345.37 g/mol, is a CATO reference standard with documented purity and traceability.
4,4'-([1,2,5]Thiadiazolo[3,4-c]pyridine-4,7-diyl)dibenzaldehyde (C19H11N3O2S) contains a steroid core, an amide group, a sulfone 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C19H11N3O2S |
| Molecular Weight | 345.37 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°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) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2002 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Thiadiazolo Standards
- 2,2'-([1,2,5]Thiadiazolo[3,4-c]pyridine-4,7-diylbis(4,1-phenylene))diacetonitrile (CAS 1819995-22-6)
- ((2h-[1,2,5]thiadiazolo[2,3-a]pyridin-4-yl)sulfonyl)proline (CAS 329271-68-3)
- 4-([1,2,5]Thiadiazolo[3,4-d]pyrimidin-7-yl)morpholine (CAS 6313-27-5)
- 5H-[1,2,5]Thiadiazolo[2,3-a]pyrazine-5-carboxylic acid, hexahydro-3-oxo-, 1,1-dimethylethyl ester, 1,1-dioxide (CAS 1255574-37-8)
- 1-([1,2,5]Thiadiazolo[3,4-b]pyridin-7-yl)piperidine-4-carbaldehyde (CAS 1242873-84-2)
- 5-Phenyl-[1,2,5]thiadiazolo[3,4-b]pyrazine (CAS 112230-76-9)
- [1,2,5]Thiadiazolo[3,4-f]quinoline (CAS 440-52-8)
- [1,2,3]Thiadiazolo[5,4-b]pyridine-6-carboxylic acid (CAS 577771-09-6)
Recommended Standards
- 2-Methoxyethyl 1,4-dihydro-5-methyl-4-oxo-2-(3-pyridinyl)thieno[2,3-d]pyrimidine-6-carboxylate (CAS 727982-66-3)
- 4-Methoxy-1-((4-methoxyphenyl)sulfonyl)-1H-indole-3-carbaldehyde (CAS 651331-49-6)
- 2-{3-[(4-Fluorobenzyl)oxy]benzoyl}-N-isopropyl-1-hydrazinecarboxamide (CAS 866009-88-3)
- 5-[(Acetyloxy)methyl]-3a,6,7,7a-tetrahydro-2-methyl-(3aR,5R,6S,7R,7aR)-5H-Pyrano[3,2-d]thiazole-6,7-diol Diacetate (Ester) (CAS 67109-74-4)
- N-((1H-Indol-3-yl)methyl)-4-butylaniline (CAS 1081135-30-9)
- 3-(bromomethyl)-5-tert-butyl-1,2-oxazole (CAS 1521077-29-1)
- Ytterbium(III) acetate tetrahydrate (CAS 15280-58-7)
- 4-Iodo-2-isopropyl-6-methylaniline (CAS 1539615-10-5)
- 5,5'-Di(pyridin-4-yl)-2,2'-bithiophene (CAS 127773-86-8)
- 1-(4-Chloro-5-methylpyrimidin-2-yl)piperidin-3-amine hydrochloride (CAS 1261235-74-8)
- 1-Boc-4,4-difluoropiperidin-3-amine (CAS 1283718-72-8)
- 4-Ethyl-n-(propan-2-yl)aniline (CAS 103093-97-6)
- Quinapril Isopropyl Ester Analog (CAS 955034-25-0)
- Exenatide (CAS 141758-74-9（free base）)
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