4,7-Dichlorothieno[2,3-d]pyridazine CAS 699-89-8
| CAS No. | 699-89-8 |
| Molecular Formula | C6H2Cl2N2S |
| Molecular Weight | 205.06 g/mol |
| 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.
4,7-Dichlorothieno[2,3-d]pyridazine (CAS 699-89-8) is a high-purity analytical reference standard with the molecular formula C6H2Cl2N2S and a molecular weight of 205.06 g/mol.
Structurally, 4,7-Dichlorothieno[2,3-d]pyridazine (C6H2Cl2N2S) contains a nitrile group, sulfur-containing functionality, chlorine substitution, 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 205.06 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.
As a certified reference material (CRM), 4,7-Dichlorothieno[2,3-d]pyridazine 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 | C6H2Cl2N2S |
| Molecular Weight | 205.06 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Dichlorothieno Standards
- 4,5-Dichlorothieno[2,3-d]pyrimidine (CAS 137240-10-9)
- 2,4-Dichlorothieno[3,2-d]pyrimidine, 97% (CAS 16234-14-3)
- 4,7-Dichlorothieno[3,2-d]pyrimidine (CAS 1823338-14-2)
- 1,4-Dichlorothieno[3,4-d]pyridazine (CAS 699-86-5)
- 2,4-Dichlorothieno[3,4-d]pyrimidine (CAS 36948-21-7)
- 2,4-Dichlorothieno[3,4-b]pyridine (CAS 124555-08-4)
- 2,5-Dichlorothieno[3,2-b]thiophene (CAS 39076-88-5)
- 5,7-dichlorothieno[2,3-c]pyridine (CAS 1326715-01-8)
Recommended Standards
- 3,5-Dichloro-2-isothiocyanatopyridine (CAS 59180-89-1)
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- 3-(3-Bromophenyl)-1-(3,4,5-trifluorophenyl)propan-1-one (CAS 898760-83-3)
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- 3-(4-Bromo-2-chlorophenyl)acrylic acid (CAS 1233055-24-7)
- N-Isopropyl-N-methyl-4-nitrobenzenesulfonamide (CAS 1394765-89-9)
- (s)-2-Amino-2-(2,3-dichlorophenyl)ethan-1-ol (CAS 1213898-76-0)
- (2R,3S,4R,5R)-2-(Hydroxymethyl)-5-(6-methoxy-9H-purin-9-yl)tetrahydrofuran-3,4-diol (CAS 5746-29-2)
- FSL-1-FLAG (CAS 2243206-97-3)
- Steroidogenesis-Activator Polypeptide (rat) (H-8855.0500) (CAS 108563-23-1)
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