Thiazolo[4,5-b]pyrazine CAS 274-00-0
| CAS No. | 274-00-0 |
| Molecular Formula | C5H3N3S |
| Molecular Weight | 137.16 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.
Thiazolo[4,5-b]pyrazine (CAS 274-00-0), molecular formula C5H3N3S and molecular weight 137.16 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C5H3N3S, Thiazolo[4,5-b]pyrazine contains a nitrile group, sulfur-containing functionality; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 137.16 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO manufactures Thiazolo[4,5-b]pyrazine 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 | C5H3N3S |
| Molecular Weight | 137.16 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 |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Thiazolo Standards
- Thiazolo[4,5-d]pyrimidine (CAS 273-99-4)
- thiazolo[5,4-d]pyrimidine (CAS 273-86-9)
- Thiazolo[4,5-b]pyridine (CAS 273-98-3)
- Thiazolo[4,5-c]pyridine (CAS 273-75-6)
- Thiazolo[5,4-b]pyridine (CAS 273-84-7)
- Thiazolo[5,4-d]thiazole (CAS 251-56-9)
- thiazolo[3,2-b][1,2,4]triazole (CAS 252-00-6)
- thiazolo[5,4-c]pyridine (CAS 273-70-1)
Recommended Standards
- N-(Methylsulfonyl)acetamide (CAS 81005-29-0)
- Isothiazolo[5,4-d]pyrimidine (CAS 272-26-4)
- Isothiazolo[4,5-d]pyrimidine (CAS 7078-51-5)
- Thiophene-2-carbonyl cyanide (CAS 6007-78-9)
- 3-Ethyl-3-hydroxy-N-(m-tolyl)azetidine-1-carboxamide (CAS 1482636-78-1)
- N-Benzyl-4-iodocyclohexanamine (CAS 1353978-89-8)
- 7-Chlorobenzo[d]thiazole-2-carbonitrile (CAS 1188147-10-5)
- 2-(Diisopropylamino)acetonitrile (CAS 54714-49-7)
- 2-Keto-3-amino-4-methylpentane hydrochloride (CAS 5440-22-2)
- 2-(2,5-Dimethyl-1h-pyrrol-1-yl)-3-phenylpropanoic acid (CAS 130016-75-0)
- 2,9-Dimethyl-1,10-phenanthroline hydrochloride monohydrate 303136-82-5 6178AF C14H12N2.HCl.H2O (CAS 303136-82-5)
- N-(3,4-Dichlorophenyl)-3,5-dimethylbenzene-1-carboximidamide (CAS 400086-41-1)
- 2-Butyl-4-chloro-1-methyl-1H-imidazole-5-carbaldehyde (CAS 1332222-81-7)
- Semaglutide Impurity 15 (CAS CATO-C4X-222615)
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