Multiple choice

Indol-1 is popular for

  1. beta-blocker

  2. beta blocker and calcium channel blocker

  3. pH indicator

  4. calcium indicator

  5. both (1) and (2)

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This option is correct because indol-1 is a popular calcium indicator similar to fura-2. In contrast to fura-2, indol-1 has a dual emission peak in Ca free solution in 475 nm while in the presence of Ca, the emission is shifted to 400 nm.