2-Methyl-5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidin-4-amine CAS 77373-45-6
| CAS No. | 77373-45-6 |
| Molecular Formula | C11H13N3S |
| Molecular Weight | 219.31 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-Methyl-5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidin-4-amine (CAS 77373-45-6), molecular formula C11H13N3S and molecular weight 219.31 g/mol, is a CATO reference standard with documented purity and traceability.
2-Methyl-5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidin-4-amine (C11H13N3S) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality. Its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 2-Methyl-5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidin-4-amine under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C11H13N3S |
| Molecular Weight | 219.31 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1979 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Methyl Standards
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Recommended Standards
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- 2-Hydrazinyl-5-methyl-4-(p-tolyl)thiazole (CAS 886494-57-1)
- 4-(2,3,5,6-Tetrahydroimidazo[2,1-b]thiazol-6-yl)aniline (CAS 66235-02-7)
- 2,3,4,9-tetrahydro-1H-carbazol-6-amine hydrochloride (CAS 1079-26-1)
- N-(4-(2-Oxoimidazolidin-1-yl)phenyl)acetamide (CAS 89518-36-5)
- 5-{[(E)-(4-Fluorophenyl)methylidene]amino}-6-imino-2-oxo-1-phenyl-1,2,3,6-tetrahydro-4-pyrimidinecarbonitrile (CAS 937604-56-3)
- (4R)-2-(3-Chloro-4-hydroxyphenyl)thiazolidine-4-carboxylic acid (CAS 1014082-20-2)
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- [(3-Methoxy-1,2-thiazol-5-yl)methyl](methyl)amine (CAS 1934576-94-9)
- n1,n1-Diethyl-2-methylpropane-1,3-diamine (CAS 889889-06-9)
- Des-Ala18-Tirzepatide (CAS CATO-CPTD788955)
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