2,2'-(1,2-?????)??[5-[[4-(4-????)-6-(?????)-1,3,5-?????-2-?]???]?????, ???? ? Fluorescent Brightener 204 Fluorescent whitening agent ER fine powder CALCOFLUOR WHITE STAIN Fluorescent Brightener 210 C.I. 482200 2,2'-(1,2-Ethenediyldi-4,1-phenylene)bisbenzoxazole Fluorescent brightener BAC-L 1-[(2-phenoxy-1-naphthyl)diazenyl]-2-naphthol Fluorescent brightener 85 Fluorescent Brightener 184 Fluorescent Brightener 263 Fluorescent brightener AW-L Fluorescent brightener CBS Fluorescent brightener ER-330 Fluorescent brightener DBH Fluorescent whitening agent CPA Fluorescent whitening agent NF