5-(4-Chlorophenyl)thieno[2,3-d]pyrimidine-4-thiol CAS 16307-37-2
| CAS No. | 16307-37-2 |
| Molecular Formula | C12H7ClN2S2 |
| Molecular Weight | 278.78 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
5-(4-Chlorophenyl)thieno[2,3-d]pyrimidine-4-thiol (CAS 16307-37-2) is a high-purity analytical reference standard with the molecular formula C12H7ClN2S2 and a molecular weight of 278.78 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality, chlorine substitution, 5-(4-Chlorophenyl)thieno[2,3-d]pyrimidine-4-thiol is typically pale yellow to yellow low-melting solid. Its solid-state physicochemical attributes — including a molecular weight of 278.78 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.
Physical & Chemical Properties
| Molecular Formula | C12H7ClN2S2 |
| Molecular Weight | 278.78 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1961 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
Related Chlorophenyl Standards
- [2-(2-chlorophenyl)pyrrolidin-1-yl]-[(2S)-pyrrolidin-2-yl]methanone (CAS 1290229-56-9)
- 5-(4-Chlorophenyl)-3h,4h-thieno[2,3-d]pyrimidine-4-thione (CAS 315676-32-5)
- 6-(4-Chlorophenyl)thieno[3,2-d]pyrimidine-4-thiol (CAS 854036-01-4)
- (2E)-2-[(4-Chlorophenyl)methylidene]-2H,3H,5H,6H,7H-[1,3]thiazolo[3,2-a]pyrimidin-3-one (CAS 152407-94-8)
- (E)-({2-[(4-chlorophenyl)sulfanyl]pyridin-3-yl}methylidene)(methoxy)amine (CAS 478030-97-6)
- (E)-({6-[(2-chlorophenyl)sulfanyl]pyridin-3-yl}methylidene)(methoxy)amine (CAS 339014-87-8)
- (E)-({6-[(4-chlorophenyl)sulfanyl]pyridin-3-yl}methylidene)(methoxy)amine (CAS 338966-93-1)
- 1-(2-((4-Chlorophenyl)thio)-4-methylpyrimidin-5-yl)ethan-1-one (CAS 478047-67-5)
Recommended Standards
- N-[2-(5-chloro-1H-indol-1-yl)ethyl]oxan-4-amine (CAS 1410957-90-2)
- Methyl 3-(allyloxy)-4-chloro-5-(methylthio)thiophene-2-carboxylate (CAS 1779123-86-2)
- 3-Chloro-5-(pyrrolidin-1-ylsulfonyl)pyridine-4-thiol (CAS 1352507-28-8)
- 2-Butyl-4-chloro-5-benzyloxymethyl-1H-imidazole (CAS 679412-76-1)
- Methyl 4-amino-1-propyl-1H-pyrazole-3-carboxylate (CAS 1700183-72-7)
- 4-(Difluoromethyl)-3-iodo-6-(trifluoromethyl)picolinonitrile (CAS 1805387-25-0)
- Ethyl 3-formylimidazo[1,2-a]pyridine-2-carboxylate (CAS 178488-38-5)
- 5,6,7-Trimethyl-1,8-naphthyridine-2-carboxylic acid (CAS 1554187-01-7)
- (1S,2S)-4-(aminomethyl)cyclopentane-1,2-diol (CAS 1932134-92-3)
- N-(4-Chloro-2-methylphenyl)-2-((4-(4-chlorophenyl)-5-(pyridin-4-yl)-4H-1,2,4-triazol-3-yl)thio)acetamide (CAS 476484-05-6)
- 10-Bromonaphtho[2,1-b]benzofuran (CAS 1256544-20-3)
- 3-(tert-Butyl)isoxazol-5-amine hydrochloride (CAS 1171086-95-5)
- 1-(4-Fluorophenyl)-2-(pentyloxy)ethan-1-one (CAS 1157149-30-8)
- Semaglutide impurity 214 (CAS CATO-C4X-2226214)
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