Eritromisin:
+HCl + Mayer =
endapan + air = tetap
+KMnO4=putih
coklat (keruh)
+FeCl3
= kuning kehijauan
+bourchadat=hitam
+frohde=putih
keruh
+HNO3=kuning
muda
+nessler=kuning
+dragendorf=hitam
+diazo A&B +
NaOh= gelembung gas putih
+NaOh + HCl+FeCl3
= kuning kehijauan
+H2SO4=
coklat
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