7-Methyl-5H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-5-one CAS 35523-75-2
| CAS No. | 35523-75-2 |
| Molecular Formula | C6H5N3OS |
| Molecular Weight | 167.19 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.
7-Methyl-5H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-5-one (CAS 35523-75-2) is a high-purity analytical reference standard with the molecular formula C6H5N3OS and a molecular weight of 167.19 g/mol.
The molecular framework of 7-Methyl-5H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-5-one (C6H5N3OS) is characterized by an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
CATO manufactures 7-Methyl-5H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-5-one 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 | C6H5N3OS |
| Molecular Weight | 167.19 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.) | 1967 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Recommended Standards
- 7-Hydroxythieno[3,2-b]pyridin-5(4H)-one (CAS 74695-40-2)
- 8-Amino-5H-purine-6(9H)-thione (CAS 6223-63-8)
- 7-Amino-[1,2,4]triazolo[1,5-c]pyrimidine-5(6H)-thione (CAS 70182-88-6)
- Benzenesulfonyl cyanide (CAS 24224-99-5)
- (1-(Pyridin-2-yl)-1H-pyrazol-4-yl)methanol (CAS 1199773-61-9)
- 2,5-Dimethyl-2,5-diazabicyclo[4.2.0]oct-1(6)-ene-7,8-dione (CAS 64186-72-7)
- 7-Hydroxy-4-(4-methoxyphenyl)chroman-2-one (CAS 109386-28-9)
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- 1,4-Diisocyanatocyclohexane (cis- and trans- mixture) (CAS 2556-36-7)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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