5-Chloro-[1,2,4]Triazolo[1,5-A]Pyrimidine-2-Sulfonylchloride CAS 1250998-35-6
| CAS No. | 1250998-35-6 |
| Molecular Formula | C5H2Cl2N4O2S |
| Molecular Weight | 253.07 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 5-Chloro-[1,2,4]Triazolo[1,5-A]Pyrimidine-2-Sulfonylchloride is closely related to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
5-Chloro-[1,2,4]Triazolo[1,5-A]Pyrimidine-2-Sulfonylchloride (CAS 1250998-35-6), molecular formula C5H2Cl2N4O2S and molecular weight 253.07 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C5H2Cl2N4O2S, 5-Chloro-[1,2,4]Triazolo[1,5-A]Pyrimidine-2-Sulfonylchloride contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 253.07 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.
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-[1,2,4]Triazolo[1,5-A]Pyrimidine-2-Sulfonylchloride 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 | C5H2Cl2N4O2S |
| Molecular Weight | 253.07 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, 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; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Chloro Standards
- 6-Chloro-2-phenylpyrimidine-4-carbonyl chloride (CAS 1148122-15-9)
- 2-Chloro-4-phenylpyrimidine-5-carbonyl chloride (CAS 188781-14-8)
- 4-Chloro-2-phenylpyrimidine-5-carbonyl chloride (CAS 66206-81-3)
- 6-chloro-4-(chloromethyl)-8-oxa-3,5-diazatricyclo[7.4.0.0²,⁷]trideca-1(13),2,4,6,9,11-hexaene (CAS 80550-78-3)
- 2-chloro-4,5-difluorobenzene-1-sulfonyl chloride (CAS 67475-58-5)
- 4-chloro-2,5-difluorobenzene-1-sulfonyl chloride (CAS 286932-78-3)
- 9-Chloro-5-(chloromethyl)-[1,2,4]triazolo[1,5-c]quinazoline (CAS 61164-88-3)
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Recommended Standards
- 2-(5-bromo-6-fluoro-1H-indol-3-yl)acetonitrile (CAS 1227598-56-2)
- 5-Bromo-4-oxo-1,4-dihydropyridine-3-sulfonamide (CAS 1352507-74-4)
- 2-(4-Bromo-6-fluoro-1H-indol-3-yl)acetonitrile (CAS 1227578-27-9)
- 4-Amino-5-bromopyridine-3-sulfonic acid (CAS 1352532-56-9)
- 2-(3-Bromo-4-fluorophenoxy)ethan-1-ol (CAS 1548379-18-5)
- 1-NItro-3-(propan-2-yloxy)-5-(trifluoromethyl)benzene (CAS 1280201-28-6)
- N-benzyl-3-methoxy-N-(4-methoxyphenyl)benzamide (CAS 338400-61-6)
- Carbetocin Impurity 40 (CAS CATO-C4X-191140)
- 3-(4-Chlorophenyl)imidazo[1,2-a]pyridine-8-carboxylic acid (CAS 885276-32-4)
- Methyl 2-ethyl-3-oxohexanoate (CAS 68039-27-0)
- Ethyl [2,4'-bipyridine]-3-carboxylate (CAS 1214365-55-5)
- 1-[(3,5-dimethoxyphenyl)methyl]piperazine (CAS 118778-74-8)
- 6-Fluoropyrimidine-4,5-diamine (CAS 695-78-3)
- Tau Peptide (244-274) (Repeat 1 Domain) trifluoroacetate salt (CAS 330456-24-1)
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