4-chloro-7-methylthieno[3,2-d]pyrimidine CAS 175137-21-0
| CAS No. | 175137-21-0 |
| Molecular Formula | C7H13ClN2S |
| Molecular Weight | 192.71 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a nitrile group, sulfur-containing functionality, chlorine substitution, 4-chloro-7-methylthieno[3,2-d]pyrimidine is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 192.71 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.
4-chloro-7-methylthieno[3,2-d]pyrimidine (CAS 175137-21-0) is a high-purity analytical reference standard with the molecular formula C7H13ClN2S and a molecular weight of 192.71 g/mol.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 4-chloro-7-methylthieno[3,2-d]pyrimidine meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C7H13ClN2S |
| Molecular Weight | 192.71 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 | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 2007 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related chloro Standards
- 4-chloro-6-methylthieno[3,2-d]pyrimidine (CAS 108134-22-1)
- 2-chloro-6-methylthieno[2,3-d]pyrimidine (CAS 1225875-20-6)
- 2-chloro-1,3-benzothiazol-7-amine (CAS 1782641-10-4)
- 2-chloro-6-methyl-thieno[3,2-d]pyrimidine (CAS 2033057-21-3)
- 4-chloro-2-methylthieno[2,3-d]pyrimidine (CAS 56843-79-9)
- 4-chloro-5-methylthieno[2,3-d]pyrimidine (CAS 43088-67-1)
- 1-Chloro-6-methyl-1,2-dihydro-thieno[3,2-d]pyrimidine 319442-16-5 4-chloro-2-methylthieno[3,2-d]pyrimidine A5755 (CAS 319442-16-5)
- 1-(3-Chloro-2-methylpropoxy)-3,3-dimethylbutane (CAS 1477830-43-5)
Recommended Standards
- 6-chlorothieno[2,3-b]pyridin-2-amine (CAS 1638771-87-5)
- 6-chlorothieno[3,2-c]pyridin-2-amine (CAS 1638764-29-0)
- 5-(Methylthio)thiophene-2-carbonyl chloride (CAS 135080-21-6)
- 19952-47-7 2-Benzothiazolamine, 4-chloro- Benzothiazole, 2-amino-4-chloro- 4-Chlorobenzothiazol-2-ylamine 4-27-00-04859 (Beilstein Handbook Reference) 2-Amino-4-chlorobenzothiazole BRN 0136784 EINECS 243-439-5 (CAS 19952-47-7)
- Nifekalant Hydrochloride (CAS 130656-51-8)
- Tifenazoxide (CAS 279215-43-9)
- 2-Benzyl-1,3-diazaspiro[4.4]non-2-en-4-one (CAS 737742-80-2)
- 3-(Piperidin-1-yl)butanoic acid hydrochloride (CAS 237062-39-4)
- FA-Phe-Phe-OH (CAS 83661-95-4)
- (R)-2-Amino-3-(6-nitro-1H-indol-3-yl)propanoic acid (CAS 56937-50-9)
- 2-Cyclopentylcyclohexan-1-ol (CAS 103984-62-9)
- 2,3,4,6-Tetra-O-benzyl-D-galactopyranose (CAS 53081-25-7)
- Ethyl 5-(3-aminophenyl)isoxazole-3-carboxylate (CAS 745078-84-6)
- Peptide Impurity 09 X TFA Salt (CAS CATO-CPTD788809)
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