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CAS 870-63-3 — 1-Bromo-3-methylbut-2-ene

1-Bromo-3-methylbut-2-ene is a versatile brominated alkene used primarily as a building block in organic synthesis, particularly for pharmaceuticals, agrochemicals, and specialty polymers. It enables selective bromination reactions due to its reactive double bond and branched structure. This chemical has a CAS number of 870-63-3 and carries no signal word under GHS classification. It is a clear, colorless liquid with a molecular weight of 151.03 g/mol, boiling point around 125–127°C, and density of approximately 1.18 g/cm³. Molekula supplies 1-Bromo-3-methylbut-2-ene from research to bulk quantities with full documentation and ISO 9001:2015 traceability.