5-Methylthieno[2,3-d]pyrimidin-4-amine CAS 13145-89-6
| CAS No. | 13145-89-6 |
| Molecular Formula | C7H7N3S |
| Molecular Weight | 165.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
5-Methylthieno[2,3-d]pyrimidin-4-amine (CAS 13145-89-6), molecular formula C7H7N3S and molecular weight 165.22 g/mol, is a CATO reference standard with documented purity and traceability.
5-Methylthieno[2,3-d]pyrimidin-4-amine (C7H7N3S) contains a nitrile group, sulfur-containing functionality, an aromatic ring system. Its physicochemical properties are representative of its class; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
As a certified reference material (CRM), 5-Methylthieno[2,3-d]pyrimidin-4-amine 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 | C7H7N3S |
| Molecular Weight | 165.22 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.) | 1960 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Methylthieno Standards
- N-Methylthieno[2,3-d]pyrimidin-2-amine (CAS 1263282-74-1)
- 2-Methylthieno[2,3-D]Pyrimidin-4-Amine (CAS 60703-75-5)
- 6-Methylthieno[2,3-d]pyrimidin-4-amine (CAS 885269-52-3)
- 7-Methylthieno[2,3-c]pyridin-5-ol (CAS 118487-65-3)
- 4-Methylthieno[3,2-c]pyridin-6(5H)-one (CAS 118487-83-5)
- 3-Methylthieno[2,3-c]pyridin-7-ol (CAS 1196156-29-2)
- 3-Methylthieno[2,3-b]pyridin-4-ol (CAS 1215494-51-1)
- 2-Methylthieno[3,2-c]pyridin-4(5H)-one (CAS 59207-23-7)
Recommended Standards
- Thiazolo[5,4-b]pyridin-5-ylmethanamine (CAS 1313726-14-5)
- Thiazolo[4,5-c]pyridin-4-ylmethanamine (CAS 1332387-69-5)
- 2-(1-Methyl-1H-pyrazol-5-yl)thiazole (CAS 1269292-62-7)
- 5-Methylthiazolo[4,5-b]pyridin-2-amine (CAS 13575-42-3)
- 2-((2-Bromoethyl)thio)thiophene (CAS 55697-88-6)
- 2-(2,5-Bis(trifluoromethyl)phenyl)acetonitrile (CAS 302911-99-5)
- MEthyl 3'-(trifluoromethyl)[1,1'-biphenyl]-4-carboxylate (CAS 127783-72-6)
- N-((4-hydroxy-2,4,5-trimethylpiperidin-3-yl)methyl)methanesulfonamide (CAS 2366182-06-9)
- 6-(Bromomethyl)-1,2,3,4-tetrahydronaphthalene (CAS 6836-48-2)
- 2-(4-Hydrazinylphenyl)acetic acid (CAS 29519-77-5)
- 2-(Phenoxymethyl)thiazole-4-carbaldehyde (CAS 1082576-04-2)
- DL-3,4-Dihydroxymandelic acid-d3 (CAS 2124275-75-6)
- 2-(3-(Benzyloxy)-4-methoxyphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1005010-03-6)
- Semaglutide impurity 69 (CAS CATO-C4X-222669)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com