1,4-Dichlorothieno[3,4-d]pyridazine CAS 699-86-5
| CAS No. | 699-86-5 |
| Molecular Formula | C6H2Cl2N2S |
| Molecular Weight | 205.06 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 1,4-Dichlorothieno[3,4-d]pyridazine is closely related to a nitrile group, sulfur-containing functionality, chlorine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
1,4-Dichlorothieno[3,4-d]pyridazine (CAS 699-86-5), molecular formula C6H2Cl2N2S and molecular weight 205.06 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrile group, sulfur-containing functionality, chlorine substitution, an aromatic ring system, 1,4-Dichlorothieno[3,4-d]pyridazine is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 205.06 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 1,4-Dichlorothieno[3,4-d]pyridazine 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 | 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)
- 2,4-Dichlorothieno[3,4-d]pyrimidine (CAS 36948-21-7)
- 4,7-Dichlorothieno[2,3-d]pyridazine (CAS 699-89-8)
- 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
- [2-Methyl-5-(pyrrolidin-1-yl)phenyl]boronic acid (CAS 2225173-84-0)
- 2-(1,3,2-Dioxaborolan-2-yl)pyridine (CAS 317810-27-8)
- (6-Cyclohexylpyridin-3-yl)boronic acid (CAS 2225173-72-6)
- 2-(5,5-Dimethyl-1,3,2-dioxaborinan-2-yl)aniline (CAS 532924-29-1)
- Trimethoxy(4-vinylphenyl)silane (CAS 18001-13-3)
- (S)-2-((tert-Butoxycarbonyl)amino)-3-(3,5-dibromo-4-hydroxyphenyl)propanoic acid (CAS 58960-71-7)
- 1-(4,6,6-Trimethyl-2-azabicyclo[2.2.1]Heptan-2-yl)butan-1-one (CAS 909229-36-3)
- 2-(6'-Methyl-8'-oxo-3',4'-dihydro-8'H-spiro[cyclohexane-1,2'-pyrano[3,2-g]chromen]-7'-yl)acetic acid (CAS 864763-36-0)
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