pyridine; copper(II) sulfate

1: CuSO4; pyridine 2: aqueous HCl View Scheme

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '11043468', constants.ctx, '0')">potassium cyanide</a>;&nbsp;<a href="#" onclick="return RXDsubstances(event, this, '1718733', constants.ctx, '0')">ethanol</a> <br /> <br /> &nbsp;