821-10-3 2-Butyne, 1,4-dichloro- 1,4-Dichlorobut-2-yne 4-01-00-00973 (Beilstein Handbook Reference) AI3-26930 BRN 0635740 1,4-Dichlorobutyne 1,4-Dichloro-2-butyne EINECS 212-474-8 NSC 30603 CAS 821-10-3
| CAS No. | 821-10-3 |
| Molecular Formula | C4H4Cl2 |
| Molecular Weight | 122.98 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
821-10-3 2-Butyne, 1,4-dichloro- 1,4-Dichlorobut-2-yne 4-01-00-00973 (Beilstein Handbook Reference) AI3-26930 BRN 0635740 1,4-Dichlorobutyne 1,4-Dichloro-2-butyne EINECS 212-474-8 NSC 30603 (CAS 821-10-3), molecular formula C4H4Cl2 and molecular weight 122.98 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 821-10-3 2-Butyne, 1,4-dichloro- 1,4-Dichlorobut-2-yne 4-01-00-00973 (Beilstein Handbook Reference) AI3-26930 BRN 0635740 1,4-Dichlorobutyne 1,4-Dichloro-2-butyne EINECS 212-474-8 NSC 30603 (C4H4Cl2) is characterized by 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.
CATO manufactures 821-10-3 2-Butyne, 1,4-dichloro- 1,4-Dichlorobut-2-yne 4-01-00-00973 (Beilstein Handbook Reference) AI3-26930 BRN 0635740 1,4-Dichlorobutyne 1,4-Dichloro-2-butyne EINECS 212-474-8 NSC 30603 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 | C4H4Cl2 |
| Molecular Weight | 122.98 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
Related Butyne Standards
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Recommended Standards
- Cis-3,4-dichlorocyclobutene (CAS 2957-95-1)
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- 1-Bromopropane (CAS 106-94-5)
- 3-[(pyrrolidin-3-yloxy)methyl]pyridine dihydrochloride (CAS 1376315-81-9)
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- 4-(1,3-Dimethylcyclohepta[c]pyrrol-6-yl)morpholine (CAS 89992-48-3)
- 5-Amino-2,4-dichloropyridine (CAS 7321-93-9)
- 4-Bromo-2-ethoxy-6-fluoroaniline (CAS 2091027-68-6)
- 2-(tert-Butoxy)-6-ethylphenol (CAS 1243378-50-8)
- Methyl (3R,4S)-4-(6-fluoro-1-hydroxy-2,3-dihydro-1H-inden-5-yl)-2-oxopyrrolidine-3-carboxylate (CAS 1784747-71-2)
- Carazostatin (CAS 126168-32-9)
- N-(2-Chloro-5-iodopyridin-4-yl)methanesulfonamide (CAS 1400286-64-7)
- Acetyl decapeptide-3 (CAS 935288-50-9)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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