Medical Definition of Arsenazo III
1.
Metallochrome indicator that changes colour when complexed to the calcium ion under physiological conditions. It is used to measure local calcium ion concentrations in vivo.
Pharmacological action: dyes, indicators and reagents.
Chemical name: 2,7-Naphthalenedisulfonic acid, 3,6-bis((2-arsonophenyl)azo)-4,5-dihydroxy-
(12 Dec 1998)
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