| 摘要 |
<p>The invention concerns compounds of formula (I.1) and (I.2) wherein R1, R2, R3, R, R'1, R'2, R'3, R' are such as defined in Claims 1 and 8. The invention also concerns the use of aminophosphonates of formula (II.1) and (II.2) wherein R1, R2, R3, A, p, R, T1, T2, R'1, R'2, R'3, A', p', R', T'1, T'2 such as defined in Claims 13 and 23, as 31P NMR pH indicators.</p> |
