Compound Q&A
What is Chromotrope 2R (CAS: 4197-07-3)?
Answer
Chromotrope 2R (CAS: 4197-07-3) is a colorless or pale yellow crystalline compound used as a pH indicator. It changes color based on the pH level of its environment.
About
CAS No
4197-07-3
English Name
Chromotrope 2R
Molecular Formula
C16H10N2Na2O8S2
Molecular Weight
468.4 g/mol
SMILES
C1=CC=C(C=C1)N=NC2=C(C3=C(C=C(C=C3C=C2S(=O)(=O)[O-])S(=O)(=O)[O-])O)O.[Na+].[Na+]
InChIKey
GXEAXHYQKZAJGB-UHFFFAOYSA-L
Last Updated: 2025-10-03 16:47