4,6-Dichlorobenzo[c][1,2,5]thiadiazole CAS 16407-65-1
| CAS No. | 16407-65-1 |
| Molecular Formula | C6H2Cl2N2S |
| Molecular Weight | 205.06 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4,6-Dichlorobenzo[c][1,2,5]thiadiazole (CAS 16407-65-1), molecular formula C6H2Cl2N2S and molecular weight 205.06 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 4,6-Dichlorobenzo[c][1,2,5]thiadiazole (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. 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.
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 | 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.) | 1961 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Dichlorobenzo Standards
- 5,6-Dichlorobenzo[c][1,2,5]thiadiazole (CAS 17821-93-1)
- 5,6-Dichlorobenzo[d]thiazole, 97% (CAS 118220-70-5)
- 6,7-Dichlorobenzo[d]thiazole, 97% (CAS 1695203-36-1)
- 3,5-Dichlorobenzo[d]isothiazole (CAS 19331-17-0)
- 4,6-Dichlorobenzo[d]thiazole, 97% (CAS 854059-32-8)
- 5,7-Dichlorobenzo[d]thiazole, 97% (CAS 939803-85-7)
- 5,6-Dichlorobenzo[d]oxazol-2(3H)-one (CAS 5285-41-6)
- 5,7-Dichlorobenzo[c][1,2,5]oxadiazol-4-amine (CAS 330982-41-7)
Recommended Standards
- (3-Methyl-2,3,4,5-tetrahydro-1H-benzo[d]azepin-7-yl)boronic acid (CAS 163068-17-5)
- (4-(1-(Cyclopropylamino)ethyl)phenyl)boronic acid (CAS 1704073-37-9)
- 2,4-Dichlorothieno[3,2-d]pyrimidine, 97% (CAS 16234-14-3)
- 2,6-Dichlorothiazolo[5,4-b]pyridine (CAS 159870-89-0)
- 2-(Butylthio)-6-(phenylthio)pyrimidin-4-amine (CAS 284681-95-4)
- 5-Bromo-N1-cyclohexylbenzene-1,2-diamine (CAS 1162697-04-2)
- tert-Butyl 4-fluoro-2,8-diazaspiro[4.5]decane-2-carboxylate (CAS 2878525-38-1)
- 1-Chloro-5-fluoro-4-nitro-2-(trichloromethoxy)benzene (CAS 1417566-39-2)
- 2-Chloro-6-methoxy-8-nitroquinoline (CAS 52824-29-0)
- 1,3-Dimethyl-6-(piperidin-1-yl)-1,2,3,4-tetrahydropyrimidine-2,4-dione (CAS 74151-86-3)
- Reboxetine Impurity 1 (CAS CATO-C4X-18701)
- 6-Chloro-3-iodo-2-phenylimidazo[1,2-a]pyridine (CAS 1426142-97-3)
- 2-(4-Methylphenoxymethyl)-1,3-thiazole-4-carbaldehyde (CAS 1197954-30-5)
- Des-[Gly]31-Semaglutide (CAS CATO-C4X-2226156)
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