3-(4-Chlorophenyl)-1-thioxo-1H-thiazolo[3,4-a]quinazolin-5(4H)-one CAS 950270-52-7
| CAS No. | 950270-52-7 |
| Molecular Formula | C16H9ClN2OS2 |
| Molecular Weight | 344.84 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.
3-(4-Chlorophenyl)-1-thioxo-1H-thiazolo[3,4-a]quinazolin-5(4H)-one (CAS 950270-52-7), molecular formula C16H9ClN2OS2 and molecular weight 344.84 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution, 3-(4-Chlorophenyl)-1-thioxo-1H-thiazolo[3,4-a]quinazolin-5(4H)-one is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 344.84 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C16H9ClN2OS2 |
| Molecular Weight | 344.84 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
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Recommended Standards
- 2-Chloro-1-trityl-1H-imidazole (CAS 67478-48-2)
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- 2-((3-Chlorobenzyl)(methyl)amino)-N-(chroman-4-yl)acetamide (CAS 923720-58-5)
- 4-Chloro-N-(2-(2-phenylmorpholino)ethyl)benzamide (CAS 954081-28-8)
- (1E,1'E)-N,N'-(p-Tolylmethylene)bis(1-p-tolylmethanimine) (CAS 119208-79-6)
- (11aR)-N,N-Dicyclohexyl-10,11,12,13-tetrahydrodiindeno[7,1-de:1',7'-fg][1,3,2]dioxaphosphocin-5-amine (CAS 500997-68-2)
- Boc-Abu-OH (CAS 34306-42-8)
- 1-(2-Bromo-6-chlorophenyl)ethan-1-one (CAS 1261438-38-3)
- n-(Cyclopropylmethyl)-3,3-dimethylcyclohexan-1-amine (CAS 1343730-96-0)
- (5Z)-3-(2-Aminoethyl)-5-[(4-chloro-3-nitrophenyl)methylidene]-1,3-thiazolidine-2,4-dione hydrochloride (CAS 1173582-56-3)
- 3-(2-bromophenyl)-1-(pyridin-4-yl)-1H-pyrazole-4-carboxylic acid (CAS 1153043-83-4)
- 6-(1-Chloroethyl)-2,3-dihydrobenzo[b][1,4]dioxine (CAS 342618-44-4)
- 5-Chloro-2-methyl-2H-indazole (CAS 541539-86-0)
- Insulin Degludec Impurity 27 (CAS CATO-C4X-215727)
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