CPC C07F 9/65031 (2013.01) [C07K 16/44 (2013.01); G01N 33/5308 (2013.01); G01N 2800/26 (2013.01)] | 1 Claim |
1. A phosphonopyrazole of formula I:
![]() wherein:
R is
![]() R2, and R3, are each, independently, H or alkyl;
X is —CH2—CH2—;
Y is NHBoc, where Boc is tert-butoxycarbonyl protecting group.
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