申请人:Yeda Research and Development Co. Ltd.
公开号:US20040067229A1
公开(公告)日:2004-04-08
A compound of the formula I
1
wherein R is H or —N═N-2-carboxyphenyl; A is (CH
2
)
n
or —CH═CH—, wherein n is an integer from 0 to 10, or A may also be —CH(COOH)— when R is —N═N-2-carboxyphenyl; and X is a radical selected from the group consisting of: (i) Cl; (ii) COOR
1
, wherein R
1
is p-nitrophenyl or N-succinimidyl; (iii) CONH—NHR
2
, wherein R
2
is H, COO(t-butyl) or COObenzyl; (iv) CONH—[B]—NHR
3
, wherein R
3
is H, COOR
1
, or CO-[B′]-maleimido, wherein R
1
is t-butyl, p-nitrophenyl or N-succinimidyl, and B and B′, the same or different, are (CH
2
)
n
wherein n is an integer from 2 to 10; (v) CONH—[B]—COOR
4
, wherein R
4
is H, C
1
-C
8
alkyl, N-succinimidyl; (vi) CONH—[B]—OH; (vii) CONH—[B]—CONH—NHR
2
, wherein R
2
is H, COO(t-butyl) or COObenzyl; and (viii) NHR
2
, wherein R
2
is H, COO(t-butyl) or COObenzyl, when A is —CH(COOH)— and R is —N═N-2-carboxyphenyl. The 4′-hydroxyazobenzene-2-carboxylic acid (HABA) compounds are novel reagents for labeling, isolation and detection of biological molecules.