5,6-Dimethyl-[1,2,5]thiadiazolo[3,4-b]pyrazine CAS 59503-57-0
| CAS No. | 59503-57-0 |
| Molecular Formula | C6H6N4S |
| Molecular Weight | 166.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5,6-Dimethyl-[1,2,5]thiadiazolo[3,4-b]pyrazine (CAS 59503-57-0), molecular formula C6H6N4S and molecular weight 166.20 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 5,6-Dimethyl-[1,2,5]thiadiazolo[3,4-b]pyrazine (C6H6N4S) contains a nitrile group, sulfur-containing functionality, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 166.20 g/mol, it falls into the medium-molecular-weight range. 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 5,6-Dimethyl-[1,2,5]thiadiazolo[3,4-b]pyrazine 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 | C6H6N4S |
| Molecular Weight | 166.20 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.) | 1974 |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Dimethyl Standards
- N,2-Dimethyl-5-nitroaniline (CAS 10224-71-2)
- N,2-Dimethyl-4-nitroaniline (CAS 10439-77-7)
- 2,3-Dimethyl-5-nitroaniline (CAS 106837-44-9)
- (E)-3-(1,3-dimethyl-1H-pyrazol-5-yl)acrylic acid (CAS 1445893-68-4)
- 3-(1,3-Dimethyl-1h-pyrazol-4-yl)-3-oxopropanal (CAS 1487062-75-8)
- 3,6-Dimethyl-2-nitroaniline (CAS 15540-85-9)
- (2e)-3-(1,3-Dimethyl-1h-pyrazol-4-yl)prop-2-enoic acid (CAS 1613051-25-4)
- 4,6-Dimethyl-2-nitroaniline (CAS 1635-84-3)
Recommended Standards
- 5-(Methylthio)benzo[c][1,2,5]oxadiazole (CAS 53439-76-2)
- 5-Amino-2-(methylthio)pyrimidine-4-carbonitrile (CAS 2089377-91-1)
- 5-(2-Thienyl)-2,4-dihydro-3H-pyrazol-3-one (CAS 385381-91-9)
- 5-Amino-3-(2-thienyl)-1H-1,2,4-triazole (CAS 4922-99-0)
- Methyl 2,4,6-trimethylpyrimidine-5-carboxylate (CAS 108169-16-0)
- 3-cyano-5-hydroxypyridine (CAS 152803-24-2)
- 3-Cyclopropyl-5,6,7,8,9,10-hexahydrocycloocta[c]pyridazine (CAS 918874-19-8)
- 5-(1-Morpholinoethyl)furan-2-carboxylic acid (CAS 799257-35-5)
- 3-(5-Methylbenzo[d]oxazol-2-yl)-N-propylpyridin-2-amine (CAS 860609-40-1)
- 5-Methoxy-3-(piperidin-1-ylmethyl)-1H-indole (CAS 57000-46-1)
- Methyl 3-(4-cyanophenyl)prop-2-ynoate (CAS 1032041-58-9)
- 4-Oxo-4-(4-(trifluoromethyl)phenyl)butanenitrile (CAS 898783-70-5)
- (2R,3R)-N,N,2-trimethylpyrrolidin-3-amine;dihydrochloride (CAS 2306255-24-1)
- 59880-97-6 Chemotactic peptide F-Met-Leu-Phe L-Phenylalanine, N-(N-(N-formyl-L-methionyl)-L-leucyl)- N-Formyl-L-methionyl-L-leucyl-L-phenylalanine N-Formyl-Met-Leu-Phe N-Formylmethionine leucyl-phenylalanine fMLF fMLP (misnomer but widely used) (CAS 59880-97-6)
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