5-Chloro-7-methylthiazolo[5,4-d]pyrimidine CAS 13316-13-7
| CAS No. | 13316-13-7 |
| Molecular Formula | C6H4ClN3S |
| Molecular Weight | 185.63 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Chloro-7-methylthiazolo[5,4-d]pyrimidine (CAS 13316-13-7), molecular formula C6H4ClN3S and molecular weight 185.63 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 5-Chloro-7-methylthiazolo[5,4-d]pyrimidine (C6H4ClN3S) is characterized by a nitrile group, sulfur-containing functionality, chlorine substitution, 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 aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), 5-Chloro-7-methylthiazolo[5,4-d]pyrimidine 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 | C6H4ClN3S |
| Molecular Weight | 185.63 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; 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.) | 1960 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Chloro Standards
- 5-Chloro-2-(methylthio)pyrimidine-4-carbonitrile (CAS 1023814-07-4)
- 7-Chloro-8-fluoro-1,2,3,4-tetrahydroquinoline (CAS 1039881-41-8)
- 1-(2-Chloro-6-fluorophenyl)cyclopropanamine (CAS 1094218-29-7)
- 4-Chloro-3-methylisothiazolo[5,4-d]pyrimidine (CAS 1146294-31-6)
- 2-(2-Chloro-6-fluorophenyl)cyclopropan-1-amine (CAS 1157693-91-8)
- 7-Chloro-2-methylthiazolo[5,4-d]pyrimidine (CAS 116056-21-4)
- 4-Chloro-1H-imidazo[4,5-c]pyridine-2(3H)-thione (CAS 120759-70-8)
- (R)-7-chloro-4-fluoro-2,3-dihydro-1H-inden-1-amine (CAS 1212858-99-5)
Recommended Standards
- 7-Chloro-5-methylthiazolo[5,4-d]pyrimidine (CAS 13316-09-1)
- 7-Chloro-5-fluoro-2,3-dihydro-1H-inden-1-amine (CAS 1337210-62-4)
- 6-Chloro-2-methylthiazolo[4,5-b]pyrazine (CAS 1292369-28-8)
- 7-Chloro-4-fluoro-2,3-dihydro-1H-inden-1-amine (CAS 1337367-67-5)
- 71637-34-8 AR-1H8597 benzenemethanamine, compd. with trifluoroborane(1:1) (CAS 71637-34-8)
- 2-(3-chloroÂphenylÂ)-dioxalane (CAS 64380-53-6)
- Ergosta-7,22-dien-3-one (CAS 32507-77-0)
- 3,5-Dioxo-1,2,4-triazolidine-1-carboxamide (CAS 88947-34-6)
- 6-chloro-7-fluoroquinoxaline (CAS 1913266-52-0)
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- 3-(Difluoromethyl)-5-fluoro-4-methoxypyridin-2-amine (CAS 1805114-00-4)
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