591-97-9 G6Y5C34N83 1-Chloro-2-butene 2-Butene, 1-chloro- 1-Chlorobut-2-ene 2-01-00-00176 (Beilstein Handbook Reference) BRN 0605304 2-Butenyl chloride Crotyl chloride EINECS 209-739-5 Krotylchlorid [Czech] gamma-Methallyl chloride gamma-Methylallyl chloride Krotylchlorid UNII-G6Y5C34N83 CAS 591-97-9
| CAS No. | 591-97-9 |
| Molecular Formula | C4H7Cl |
| Molecular Weight | 90.55 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
591-97-9 G6Y5C34N83 1-Chloro-2-butene 2-Butene, 1-chloro- 1-Chlorobut-2-ene 2-01-00-00176 (Beilstein Handbook Reference) BRN 0605304 2-Butenyl chloride Crotyl chloride EINECS 209-739-5 Krotylchlorid [Czech] gamma-Methallyl chloride gamma-Methylallyl chloride Krotylchlorid UNII-G6Y5C34N83 (CAS 591-97-9), molecular formula C4H7Cl and molecular weight 90.55 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 591-97-9 G6Y5C34N83 1-Chloro-2-butene 2-Butene, 1-chloro- 1-Chlorobut-2-ene 2-01-00-00176 (Beilstein Handbook Reference) BRN 0605304 2-Butenyl chloride Crotyl chloride EINECS 209-739-5 Krotylchlorid [Czech] gamma-Methallyl chloride gamma-Methylallyl chloride Krotylchlorid UNII-G6Y5C34N83 (C4H7Cl) contains chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 1.0, corresponding to approximately 1 ring(s) or double-bond equivalent(s). With a molecular weight of 90.55 g/mol, it falls into the low-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), 591-97-9 G6Y5C34N83 1-Chloro-2-butene 2-Butene, 1-chloro- 1-Chlorobut-2-ene 2-01-00-00176 (Beilstein Handbook Reference) BRN 0605304 2-Butenyl chloride Crotyl chloride EINECS 209-739-5 Krotylchlorid [Czech] gamma-Methallyl chloride gamma-Methylallyl chloride Krotylchlorid UNII-G6Y5C34N83 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 | C4H7Cl |
| Molecular Weight | 90.55 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) | 1.0 |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
Recommended Standards
- 58S8R4439O 563-52-0 3-Chloro-1-butene 1-Butene, 3-chloro- 3-Chlorobut-1-ene gamma-Chloro-alpha-butylene EINECS 209-252-8 alpha-Methallyl chloride alpha-Methylallyl chloride 1-Methylallyl chloride NSC 60192 UNII-58S8R4439O (CAS 563-52-0)
- Lercanidipine Impurity 33 (CAS 927-73-1)
- XX3QN28JUX 4894-61-5 1-Chloro-2-butene, (2E)- 2-Butene, 1-chloro-, (2E)- (E)-1-Chlorobut-2-ene (E)-1-Chloro-2-butene trans-1-Chloro-2-butene EINECS 225-516-5 UNII-XX3QN28JUX (CAS 4894-61-5)
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