7-Methyl-2-sulfanyl-5H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-5-one CAS 68967-31-7
| CAS No. | 68967-31-7 |
| Molecular Formula | C6H5N3OS2 |
| Molecular Weight | 199.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
7-Methyl-2-sulfanyl-5H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-5-one (C6H5N3OS2) contains an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
7-Methyl-2-sulfanyl-5H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-5-one (CAS 68967-31-7), molecular formula C6H5N3OS2 and molecular weight 199.25 g/mol, is a CATO reference standard with documented purity and traceability.
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.
As a certified reference material (CRM), 7-Methyl-2-sulfanyl-5H-[1,3,4]thiadiazolo[3,2-a]pyrimidin-5-one 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 | C6H5N3OS2 |
| Molecular Weight | 199.25 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.) | 1976 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 2 |
Related Methyl Standards
- 3-(4-Ethyl-5-sulfanyl-4h-1,2,4-triazol-3-yl)propanamide (CAS 854137-56-7)
- 3-methyl-2-sulfanyl-3,4-dihydroquinazolin-4-one (CAS 1705-09-5)
- 2-(3-Propyl-5-sulfanyl-4h-1,2,4-triazol-4-yl)acetic acid (CAS 853723-94-1)
- 1-Ethyl-6-sulfanyl-1H-pyrazolo[3,4-d]pyrimidin-4-ol (CAS 832746-55-1)
- 4-sulfanyl-2-(trifluoromethyl)benzonitrile (CAS 110888-22-7)
- 1-[(5-sulfanyl-1,3,4-oxadiazol-2-yl)methyl]pyrrolidin-2-one (CAS 160758-18-9)
- 2-Sulfanyl-5H,6H,7H-cyclopenta[b]pyridine-3-carboxylic acid (CAS 933728-88-2)
- 2-Sulfanyl-1,3-benzoxazole-6-carboxylic acid (CAS 108085-62-7)
Recommended Standards
- 7-amino-1,5-naphthyridine-3-carboxylic acid (CAS 2089649-99-8)
- 8-amino-1,5-naphthyridine-3-carboxylic acid (CAS 2007920-30-9)
- 7,8,9,10-Tetrahydrophenanthridin-6(5H)-one (CAS 4514-04-9)
- 8-methyl-2,3,4,9-tetrahydro-1H-carbazol-1-one (CAS 3449-50-1)
- 4,5-Dichloro-benzothiazol-2-ylamine (CAS 1849-71-4)
- 2-[5-Oxo-4-(thiophen-2-yl)-4,5-dihydro-1H-1,2,3,4-tetrazol-1-yl]acetic acid (CAS 923226-02-2)
- 2-(((3-Methoxypropyl)amino)methyl)phenol (CAS 1038236-13-3)
- 3-(Butylthio)-5-(trifluoromethyl)-4h-1,2,4-triazol-4-amine (CAS 459211-06-4)
- 40156-70-5 trans-n-(4-hydroxy-3-methylbut-2-enyl) phthalimide (CAS 40156-70-5)
- 2-(Tritylamino)-4-thiazolylacetic Acid (CAS 64220-26-4)
- Methyl 5-fluoro-2-(hydroxymethyl)benzoate (CAS 1427417-73-9)
- Cadmium bromide (CAS 7789-42-6)
- 4-(Benzo[d]thiazol-2-yl)-N-propylpiperidine-1-carboxamide (CAS 478256-97-2)
- Semaglutide impurity 45 (CAS CATO-C4X-222645)
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