2-Chloro-n-methylthieno[2,3-d]pyrimidin-4-amine CAS 63894-63-3
| CAS No. | 63894-63-3 |
| Molecular Formula | C7H6ClN3S |
| Molecular Weight | 199.66 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 199.66 g/mol gives 2-Chloro-n-methylthieno[2,3-d]pyrimidin-4-amine distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 2-Chloro-n-methylthieno[2,3-d]pyrimidin-4-amine (CAS 63894-63-3), a certified reference material (molecular formula C7H6ClN3S, MW 199.66 g/mol) for analytical method development and quality control.
2-Chloro-n-methylthieno[2,3-d]pyrimidin-4-amine (C7H6ClN3S) contains a nitrile group, sulfur-containing functionality, chlorine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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 | C7H6ClN3S |
| Molecular Weight | 199.66 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.) | 1975 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Chloro Standards
- 8-Chloro-2H-benzo[b][1,4]thiazin-3(4H)-one (CAS 100638-21-9)
- 6-Chloro-2-Methylthieno[3,2-d]pyrimidin-4-amine (CAS 1017789-18-2)
- 3-Chloro-4-methoxy-1,2-benzisothiazole (CAS 103486-06-2)
- 3-Chloro-6-methoxy-1,2-benzothiazole (CAS 103486-07-3)
- 6-Chloro-2-(methylthio)benzo[d]oxazole (CAS 1071296-64-4)
- 4-chloro-2-(methylsulfanyl)pyrrolo[2,1-f][1,2,4]triazine (CAS 1120214-78-9)
- 4-Chloro-2-methyl-6-(methylthio)pyrimidine-5-carbonitrile (CAS 112969-42-3)
- 2-Chloro-7-methoxybenzo[d]thiazole (CAS 1175277-80-1)
Recommended Standards
- 2-Chloro-6-methoxybenzothiazole (CAS 2605-14-3)
- 2-Chloro-N-methylthieno[3,2-d]pyrimidin-4-amine (CAS 35265-86-2)
- 2-Chloro-5-methoxyphenyl Isothiocyanate (CAS 82401-36-3)
- 2-Methylmorpholine-4-sulfonyl chloride (CAS 627887-48-3)
- 6-chloro-4-[(4-chlorophenyl)sulfonyl]-3,4-dihydro-2H-1,4-benzoxazine-2-carboxylic acid (CAS 866134-68-1)
- Ethyl 5-amino-2-chlorobenzoate (CAS 64401-55-4)
- 2-Methyl-5-propylpyrimidine (CAS 64171-53-5)
- (S)-1-(5-Chloropyridin-2-yl)ethanamine hydrochloride (CAS 1956437-44-7)
- 2-Isopropoxy-3-(trimethylsilyl)pyridine (CAS 782479-89-4)
- 1-((2-Nitrophenyl)sulfonyl)piperidin-4-one (CAS 267666-09-1)
- (S)-2-amino-2-(3-bromo-5-methylphenyl)ethan-1-ol (CAS 1270270-60-4)
- 2-(Bromomethyl)-5-(difluoromethyl)-6-iodo-3-methylpyridine (CAS 1805604-85-6)
- 1-{5-[(4-chlorophenyl)sulfanyl]-4-(4-methoxyphenyl)-1,3-thiazol-2-yl}-4-(thiophen-3-yl)-1H-pyrazol-5-amine (CAS 956241-57-9)
- Peptide Impurity 34 (CAS 21282-09-7)
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