6-Methylthieno[2,3-d]pyrimidine CAS 106691-22-9
| CAS No. | 106691-22-9 |
| Molecular Formula | C7H6N2S |
| Molecular Weight | 150.20 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.
6-Methylthieno[2,3-d]pyrimidine (CAS 106691-22-9), molecular formula C7H6N2S and molecular weight 150.20 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrile group, sulfur-containing functionality, an aromatic ring system, 6-Methylthieno[2,3-d]pyrimidine is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 150.20 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
As a certified reference material (CRM), 6-Methylthieno[2,3-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 | C7H6N2S |
| Molecular Weight | 150.20 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | 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.) | 1987 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Methylthieno Standards
- 5-Methylthieno[2,3-d]pyrimidine (CAS 19673-87-1)
- 2-Methylthieno[2,3-d]pyrimidine (CAS 56844-01-0)
- 7-methylthieno[3,2-d]pyrimidine (CAS 871013-26-2)
- 4-Methylthieno[3,4-b]pyridine (CAS 109510-31-8)
- 7-Methylthieno[3,2-b]pyridine (CAS 13362-83-9)
- 5-Methylthieno[3,2-b]pyridine (CAS 1759-29-1)
- 2-Methylthieno[3,2-b]thiophene (CAS 13393-75-4)
- 3-Methylthieno[2,3-b]thiophene (CAS 1723-34-8)
Recommended Standards
- 4-(Isothiocyanatomethyl)pyridine (CAS 106244-99-9)
- 1H-benzo[d]imidazole-6-thiol (CAS 1094456-22-0)
- N-(azetidin-3-yl)methanesulfonamide (CAS 1056056-12-2)
- 1101550-83-7 1936AA 3-Amino-2-mercaptobenzonitrile C7H6N2S (CAS 1101550-83-7)
- H-Glu(OBzl)-OH (CAS 1676-73-9)
- 3-(3,3-Dimethylbutyl)pyrrolidin-3-ol (CAS 1485469-93-9)
- 2-(1-Phenyl-1h-pyrazol-3-yl)acetonitrile (CAS 1343099-23-9)
- N-((4-bromothiophen-2-yl)methyl)pyridin-3-amine (CAS 1038721-25-3)
- Irbesartan Impurity N5 (CAS 52-52-8)
- [(3-Benzyl-4-methyl-2-oxo-2H-chromen-7-yl)oxy]-acetic acid (CAS 327043-38-9)
- n-(3,4-Dimethylbenzyl)pentan-1-amine (CAS 1152904-68-1)
- N,N-Didesmethyl Sibutramine-d7 HCl (CAS 1188263-87-7)
- (R)-3,3-Difluoro-2,3-dihydro-1H-inden-1-amine (CAS 1266231-94-0)
- Insulin Degludec Impurity 26 (CAS CATO-C4X-215726)
Why CATO?
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