Methyl 4-iodo-1H-pyrazole-3-carboxylate CAS 136944-79-1
| CAS No. | 136944-79-1 |
| Molecular Formula | C5H5IN2O2 |
| Molecular Weight | 252.01 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Methyl 4-iodo-1H-pyrazole-3-carboxylate (CAS 136944-79-1) is a high-purity analytical reference standard with the molecular formula C5H5IN2O2 and a molecular weight of 252.01 g/mol.
Owing to an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, iodine substitution, Methyl 4-iodo-1H-pyrazole-3-carboxylate is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 252.01 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures Methyl 4-iodo-1H-pyrazole-3-carboxylate 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 | C5H5IN2O2 |
| Molecular Weight | 252.01 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | I-containing |
| Nitrogen Atoms | 2 |
Related Methyl Standards
- 4-Iodo-1H-pyrazole-3-carbohydrazide (CAS 1005592-09-5)
- 5-Iodo-1-methylpyrazole-4-carboxylic Acid (CAS 1198113-11-9)
- Methyl 3-iodo-1H-pyrazole-4-carboxylate (CAS 1268684-41-8)
- Methyl 4-iodo-1H-imidazole-5-carboxylate (CAS 1379328-34-3)
- 5-Iodo-6-methylpyrimidine-2,4-diol (CAS 1461-67-2)
- Methyl 4-iodo-1H-imidazole-2-carboxylate (CAS 1823913-62-7)
- 2-Iodo-4-methyloxazole-5-carboxamide (CAS 1823921-57-8)
- 2-(4-Iodo-1h-pyrazol-1-yl)acetic acid (CAS 6752-13-2)
Recommended Standards
- 4-Bromo-2-(difluoromethyl)-1-nitrobenzene (CAS 1261849-54-0)
- 4-Amino-5-bromo-2,3-difluorobenzoic acid (CAS 1379365-61-3)
- 2-Bromo-1-(difluoromethyl)-3-nitrobenzene (CAS 1261819-77-5)
- 5-Bromo-3-(difluoromethyl)picolinic acid (CAS 1404337-62-7)
- 1-(2,4-Dinitrophenyl)piperidine-3-carboxylic acid (CAS 325702-00-9)
- 3-Chloro-3-(3-methylphenyl)propiophenone (CAS 898790-63-1)
- 4-Chloro-2-methylphenyl 3-pyrrolidinylmethyl-ether hydrochloride (CAS 1220029-87-7)
- 1-[(1,1-dimethylethoxy)carbonyl]-3-oxo-2-Pyrrolidineacetic acid methyl ester (CAS 1823506-23-5)
- 2-(Hydroxymethyl)benzofuran-7-ol (CAS 258872-65-0)
- 4-Methyl-7,8-dihydro-5H-thiopyrano[4,3-d]pyrimidin-2-amine (CAS 685123-96-0)
- (2s)-2-(Carbamoylamino)-4-methylpentanoic acid (CAS 26117-20-4)
- 5,7-Dimethoxy-2,2-dimethyl-2,3-dihydro-1H-inden-1-one (CAS 1188142-81-5)
- 4-Methyl-N-phenylbenzamide (CAS 6833-18-7)
- Pancreatic Polypeptide (31-36) Free Acid, human (CAS 192432-73-8)
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