Pyrazine-2,3,5,6-tetracarboxylic acid CAS 43193-60-8
| CAS No. | 43193-60-8 |
| Molecular Formula | C8H4N2O8 |
| Molecular Weight | 256.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Pyrazine-2,3,5,6-tetracarboxylic acid.
CATO supplies Pyrazine-2,3,5,6-tetracarboxylic acid (CAS 43193-60-8), a certified reference material (molecular formula C8H4N2O8, MW 256.13 g/mol) for analytical method development and quality control.
Pyrazine-2,3,5,6-tetracarboxylic acid (C8H4N2O8) contains a carbohydrate-derived structure, an amide group. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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), Pyrazine-2,3,5,6-tetracarboxylic acid 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 | C8H4N2O8 |
| Molecular Weight | 256.13 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1969 |
| Nitrogen Atoms | 2 |
Related Pyrazine Standards
- Methyl 2-(pyrazine-2-amido)benzoate (CAS 69873-69-4)
- 4-(Pyrazine-2-carbonyl)-3,4-dihydroquinoxalin-2(1H)-one (CAS 851819-83-5)
- 2-(Pyrazine-2-carboxamido)thiazole-4-carboxylic acid (CAS 1105192-33-3)
- 4,4'-(Pyrazine-2,5-diyl)dianiline (CAS 59447-32-4)
- 1-(Pyrazine-2-carboxamido)cyclohexanecarboxylic acid (CAS 402959-98-2)
- 2-(2-(Pyrazine-2-carboxamido)thiazol-4-yl)acetic acid (CAS 926204-94-6)
- 4-(Pyrazine-2-carboxamido)benzoic acid (CAS 717854-83-6)
- 6-(Pyrazine-2-carboxamido)hexanoic acid (CAS 954270-15-6)
Recommended Standards
- Propyzamide M1 RH-24644 (CAS 29918-40-9)
- rel-(3aR,6aS)-2-(Naphthalen-1-yl)tetrahydrothieno[3,4-d][1,3,2]dioxaborole (CAS 62729-32-2)
- N-(2,4-dichlorobenzyl)-1-(furan-2-yl)methanamine (CAS 725226-21-1)
- Propyzamide (CAS 23950-58-5)
- 6-(4-Chlorophenyl)-2-(3-(2,5-dimethyl-1H-pyrrol-1-yl)thiophen-2-yl)pyrazolo[1,5-a]pyrimidine (CAS 865657-90-5)
- N-Me-Lys-OH (CAS 7431-89-2)
- tert-Butyl 5-bromo-8-iodo-3,4-dihydroisoquinoline-2(1H)-carboxylate (CAS 2922795-09-1)
- Ethyl 3-bromo-4-((2-chlorobenzyl)oxy)-5-ethoxybenzoate (CAS 1706453-11-3)
- Ethyl 4-oxo-1-(p-tolyl)pyrrolidine-3-carboxylate (CAS 745043-75-8)
- 137182-37-7 C32H34O9 Toddalosin W1246 (CAS 137182-37-7)
- 6-Ethylisothiazolo[4,3-d]pyrimidine-5,7(4H,6H)-dione (CAS 1338666-14-0)
- methyl 4,5-dichloro-2-iodobenzoate (CAS 1538516-21-0)
- 6-Bromo-3-chloropicolinonitrile (CAS 1252046-16-4)
- Semaglutide Impurity 183 (CAS 159541-28-3)
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