4-Chloro-2-methylbut-2-enal CAS 3330-25-4
| CAS No. | 3330-25-4 |
| Molecular Formula | C5H7ClO |
| Molecular Weight | 118.56 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 118.56 g/mol gives 4-Chloro-2-methylbut-2-enal distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
4-Chloro-2-methylbut-2-enal (CAS 3330-25-4), molecular formula C5H7ClO and molecular weight 118.56 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 4-Chloro-2-methylbut-2-enal (C5H7ClO) is characterized by a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 4-Chloro-2-methylbut-2-enal 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 | C5H7ClO |
| Molecular Weight | 118.56 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
Related Chloro Standards
- 2-Chloro-3-methylcyclopropane-1-carbaldehyde (CAS 139387-00-1)
- 3-Chloro-2-methylbut-2-enal (CAS 1679-40-9)
- 1-Chloro-4-methoxybut-2-yne (CAS 693-27-6)
- 2-Chloro-1-cyclopropylethan-1-one (CAS 7379-14-8)
- 6-Chloro-3,4-dihydro-2H-pyran (CAS 40446-77-3)
- 1-Chloro-3-methylbut-3-en-2-one (CAS 193958-16-6)
- 5-Chloro-4H-1,2,4-triazol-3-amine (CAS 130631-49-1)
- 5-Chloro-1-methyl-1h-1,2,3,4-tetrazole (CAS 67648-50-4)
Recommended Standards
- 3-chlorobicyclo[1.1.1]pentan-1-ol (CAS 2227206-14-4)
- 2-Methylenebutanoyl chloride (CAS 4390-96-9)
- 3-Methylbut-2-enoyl chloride contains 400 ppm phenothiazine as inhibitor 3,3-Dimethylacryloyl chloride 3-Methylcrotonoyl chloride Senecioyl chloride 3-Methyl-2-butenoyl chloride 3350-78-5 (CAS 3350-78-5)
- 2-methylcyclopropanecarbonyl chloride (CAS 60733-34-8)
- 3,5-Dichloroimidazo[1,2-a]pyridine-2-carboxylic acid (CAS 1227954-34-8)
- 4-(4-Methyl-1-piperazinyl)benzaldehyde Hydrochloride (CAS 1424939-17-2)
- 4-Chloro-6-(trifluoromethyl)pyrimidine-5-carbonitrile (CAS 1402551-79-4)
- Methyl 3-chloroisoquinoline-5-carboxylate (CAS 1432514-90-3)
- 1-(4-Chloro-3-(trifluoromethyl)phenyl)thiourea (CAS 207919-03-7)
- 2-{methyl[(propan-2-ylcarbamoyl)methyl]amino}acetic acid (CAS 900641-07-8)
- Methyl a-D-thiomannopyranoside (CAS 80734-76-5)
- 3-(4-Bromophenyl)-N-cyclohexyl-3-(1H-pyrrol-1-yl)propanamide (CAS 866040-51-9)
- 3-(Naphthalen-2-yl)butan-1-amine (CAS 1247549-96-7)
- Semaglutide impurity 214 (CAS CATO-C4X-2226214)
Why CATO?
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