Numbers vary greatly -- but several hundred, if not thousands, of chemical compounds exist in whole coffee beans; these range from alkaloids, carbohydrates, and amino acids; vitamins B1,B2, B12, C; nicotinic, folic, and pantothenic acids; to calcium, sodium, phosphorus, potassium, iron, zinc; selenium and manganese.
Whether everything finds its way into a cup of the old Nescafe -- who knows? Splurging on a 2.00 plastic coffee funnel and making a batch of drip coffee couldn't hurt . . .