2-((4-Oxo-3-phenyl-4,5-dihydro-3H-pyrimido[5,4-b]indol-2-yl)thio)acetic acid CAS 1438280-85-3
| CAS No. | 1438280-85-3 |
| Molecular Formula | C18H13N3O3S |
| Molecular Weight | 351.38 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 2-((4-Oxo-3-phenyl-4,5-dihydro-3H-pyrimido[5,4-b]indol-2-yl)thio)acetic acid is closely related to a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
2-((4-Oxo-3-phenyl-4,5-dihydro-3H-pyrimido[5,4-b]indol-2-yl)thio)acetic acid (CAS 1438280-85-3) is a high-purity analytical reference standard with the molecular formula C18H13N3O3S and a molecular weight of 351.38 g/mol.
2-((4-Oxo-3-phenyl-4,5-dihydro-3H-pyrimido[5,4-b]indol-2-yl)thio)acetic acid (C18H13N3O3S) 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 2-((4-Oxo-3-phenyl-4,5-dihydro-3H-pyrimido[5,4-b]indol-2-yl)thio)acetic acid 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 | C18H13N3O3S |
| Molecular Weight | 351.38 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Recommended Standards
- 3-((3-((2-Hydroxyethoxy)methyl)-5-methyl-2,6-dioxo-1,2,3,6-tetrahydropyrimidin-4-yl)thio)benzamide (CAS 137897-78-0)
- 7-(4-Fluorophenyl)-2-(methylsulfonyl)thieno[3,2-d]pyrimidine-6-carboxamide (CAS 1462949-98-9)
- 5-Methyl-1-phenyl-N-(5-(thiophen-3-yl)-1,3,4-oxadiazol-2-yl)-1H-pyrazole-4-carboxamide (CAS 1251684-57-7)
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- (E)-N-(2-(3-(allylthio)-6-methyl-1,2,4-triazin-5-yl)vinyl)-4-chloroaniline (CAS 477865-97-7)
- 2-[3-sulfanyl-5-(thiophen-2-yl)-4h-1,2,4-triazol-4-yl]propanoic acid (CAS 854137-71-6)
- Semaglutide Impurity 145 (CAS CATO-C4X-2226145)
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