2,3-Dihydrothieno[3,4-d]pyridazine-1,4-dione CAS 412338-39-7
| CAS No. | 412338-39-7 |
| Molecular Formula | C6H4N2O2S |
| Molecular Weight | 168.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 2,3-Dihydrothieno[3,4-d]pyridazine-1,4-dione (C6H4N2O2S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 168.17 g/mol, it falls into the medium-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
2,3-Dihydrothieno[3,4-d]pyridazine-1,4-dione (CAS 412338-39-7) is a high-purity analytical reference standard with the molecular formula C6H4N2O2S and a molecular weight of 168.17 g/mol.
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.
CATO manufactures 2,3-Dihydrothieno[3,4-d]pyridazine-1,4-dione 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 | C6H4N2O2S |
| Molecular Weight | 168.17 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Dihydrothieno Standards
- 5,6-Dihydrothieno[2,3-d]pyridazine-4,7-dione (CAS 91533-21-0)
- 5-Methyl-5,7-dihydrothieno[3,4-d]pyrimidin-4(3H)-one (CAS 1001123-68-7)
- 2,3-Dihydrothieno[3,4-b][1,4]dioxine-5-carbaldehyde (CAS 204905-77-1)
- 6,7-Dihydrothieno[3,2-d]pyrimidine-2,4-diol (CAS 913581-92-7)
- (2,3-Dihydrothieno[3,4-b][1,4]dioxin-2-yl)methanamine (CAS 1003863-36-2)
- (2,3-Dihydrothieno[3,4-b][1,4]dioxin-5-yl)methanol (CAS 859851-01-7)
- 7-Oxo-6,7-dihydrothieno[2,3-c]pyridine-4-carbonitrile, 97% (CAS 912369-27-8)
- 4-Oxo-3,4-dihydrothieno[2,3-d]pyrimidine-5-carbonitrile (CAS 1801143-20-3)
Recommended Standards
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Why CATO?
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