2,5-Dihydro-1H-pyrrole-3-carboxylic acid CAS 72519-12-1
| CAS No. | 72519-12-1 |
| Molecular Formula | C5H7NO2 |
| Molecular Weight | 113.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 2,5-Dihydro-1H-pyrrole-3-carboxylic acid is closely related to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
2,5-Dihydro-1H-pyrrole-3-carboxylic acid (CAS 72519-12-1), molecular formula C5H7NO2 and molecular weight 113.11 g/mol, is a CATO reference standard with documented purity and traceability.
2,5-Dihydro-1H-pyrrole-3-carboxylic acid (C5H7NO2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. 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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C5H7NO2 |
| Molecular Weight | 113.11 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1977 |
| Nitrogen Atoms | 1 |
Related Dihydro Standards
- (R)-2,5-Dihydro-1H-pyrrole-2-carboxylic Acid (CAS 58640-72-5)
- (S)-3,4-Dihydro-2H-pyrrole-2-carboxylic acid (CAS 64199-88-8)
- 2,3-Dihydro-[1,4]oxazine-4-carbaldehyde, 98% (CAS 61157-72-0)
- 4,5-Dihydro-1H-pyrrole-2-carboxylic acid (CAS 872264-15-8)
- (5,6-Dihydro-2h-pyran-3-yl)methanamine (CAS 1082041-24-4)
- (2R)-3,4-dihydro-2H-pyran-2-ylmethanamine (CAS 144069-81-8)
- (3,6-dihydro-2H-pyran-4-yl)methanamine (CAS 1626424-13-2)
- 6,7-dihydro-5H-pyrrolo[1,2-b][1,2,4]triazole (CAS 1956327-30-2)
Recommended Standards
- 2,5-Piperidinedione (CAS 52065-78-8)
- 2-(Azetidin-3-ylidene)acetic acid (CAS 775271-06-2)
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- 2-(1,3-Dioxolan-2-yl)acetonitrile (CAS 26118-19-4)
- 1-(3-Iodopropyl)pyrrolidine (CAS 1343580-16-4)
- 4-((1S,3R)-3-(((tert-butyldimethylsilyl)oxy)methyl)-1-methyl-1,2,3,4-tetrahydroisoquinolin-5-yl)-2-methylbutan-2-ol (CAS 1638668-30-0)
- (4'-(1,3-Dioxolan-2-yl)-[1,1'-biphenyl]-4-yl)methanol (CAS 889954-12-5)
- 1-(4-Bromo-2-fluorophenyl)imidazolidin-2-one (CAS 160132-29-6)
- 2,5-Dibromo-3,4,6-trifluorophenol (CAS 5510-39-4)
- 1-Cyclohexyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzo[d]imidazole (CAS 1416553-84-8)
- 3-Methylnaphthalen-2-ol (CAS 17324-04-8)
- 1-Acetyldecahydrocyclohepta[b]pyrrole-2-carbonitrile (CAS 88500-13-4)
- 1-(2-Isopropylphenyl)propan-1-one (CAS 107075-95-6)
- Crustacean Cardioactive Peptide (CAS 107090-96-0)
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