<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from the Enzon,
Inc. and Subsidiaries Consolidated Condensed Balance Sheet as of December 31,
1998 and the Consolidated Condensed Statement of Operations for the three and
six months ended December 31, 1998 and is qualified in its entirety by reference
to such financial statements.
</LEGEND>
<PERIOD-TYPE> 3-MOS 6-MOS
<FISCAL-YEAR-END> JUN-30-1999 JUN-30-1999
<PERIOD-END> DEC-31-1998 DEC-31-1998
<CASH> 23,735,645 23,735,645
<SECURITIES> 0 0
<RECEIVABLES> 3,942,542 3,942,542
<ALLOWANCES> 0 0
<INVENTORY> 1,220,933 1,220,933
<CURRENT-ASSETS> 30,326,566 30,326,566
<PP&E> 12,453,041 12,453,041
<DEPRECIATION> 11,127,657 11,127,657
<TOTAL-ASSETS> 33,602,382 33,602,382
<CURRENT-LIABILITIES> 5,967,240 5,967,240
<BONDS> 0 0
<PREFERRED-MANDATORY> 0 0
<PREFERRED> 1,070 1,070
<COMMON> 359,786 359,786
<OTHER-SE> 26,323,457 26,323,457
<TOTAL-LIABILITY-AND-EQUITY> 33,602,382 33,602,382
<SALES> 3,782,411 6,718,113
<TOTAL-REVENUES> 3,797,921 6,785,588
<CGS> 1,028,945 2,338,796
<TOTAL-COSTS> 4,984,886 9,405,362
<OTHER-EXPENSES> 0 0
<LOSS-PROVISION> 0 0
<INTEREST-EXPENSE> 2,619 8,055
<INCOME-PRETAX> (850,165) (1,985,114)
<INCOME-TAX> 0 0
<INCOME-CONTINUING> (850,165) (1,985,114)
<DISCONTINUED> 0 0
<EXTRAORDINARY> 0 0
<CHANGES> 0 0
<NET-INCOME> (850,165) (1,985,114)
<EPS-PRIMARY> (0.03) (0.06)
<EPS-DILUTED> (0.03) (0.06)