{"id":716471,"date":"2026-05-05T02:47:18","date_gmt":"2026-05-05T02:47:18","guid":{"rendered":"https:\/\/immunomart.com\/?post_type=product&p=716471"},"modified":"2026-05-05T02:47:18","modified_gmt":"2026-05-05T02:47:18","slug":"biotin-4-fluorescein-2","status":"publish","type":"product","link":"https:\/\/immunomart.com\/product\/biotin-4-fluorescein-2\/","title":{"rendered":"Biotin-4-Fluorescein"},"content":{"rendered":"<p>Biotin-4-fluorescein (<i>N<\/i>-(5-aminopentyl)biotinamide, trifluoroacetic acid salt) has been reported to be a superior fluorescent biotin derivative for accurate measurement of avidin and streptavidin in crude biological samples. Binding of biotin to avidin and streptavidin is high affinity, fast and noncooperative.\u00a0 <\/p>\n<ul>\u00a0 <\/p>\n<li>&amp;lamba;<sub>Ex<\/sub>\/&amp;lamba; <sub>Em<\/sub> = 494\/523 nm<\/li>\n<p>\u00a0 <\/p>\n<li>Yellow solid soluble in DMSO, or pH&gt;7 buffers<\/li>\n<p>\u00a0 <\/p>\n<li>Store at 4\u00b0C and protect from light<\/li>\n<p>\u00a0 <\/p>\n<li>C<sub>33<\/sub>H<sub>32<\/sub>N<sub>4<\/sub>O<sub>8<\/sub>S<\/li>\n<p>\u00a0 <\/p>\n<li>MW: 644.7<\/li>\n<p>\u00a0 <\/ul>\n<h3>Handling<\/h3>\n<p>Store with desiccant; Protect from light<\/p>\n<div style=\"margin:18px 0 4px;padding:11px 14px;background:#fdf4f4;border:1px solid #e6bdbd;border-left:3px solid #c41e3a;border-radius:4px;font-size:13px;line-height:1.55;color:#3a3a3a\"><strong style=\"color:#8a1524\">For Research Use Only (RUO).<\/strong> This product is sold strictly for laboratory research use only. <strong>Not for human or veterinary consumption, therapeutic, or diagnostic use.<\/strong> Any pharmacological, therapeutic, cosmetic, or biological effects described above are provided as research context only and do not represent intended or approved uses of this product.<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Biotin-4-fluorescein (N-(5-aminopentyl)biotinamide, trifluoroacetic acid salt) has been reported to be a superior fluorescent biotin derivative for accurate measurement of avidin and streptavidin in crude biological samples. Binding of biotin to avidin and streptavidin is high affinity, fast and noncooperative.\u00a0 \u00a0 &amp;lamba;Ex\/&amp;lamba; Em = 494\/523 nm \u00a0 Yellow solid soluble in DMSO, or pH&gt;7 buffers \u00a0 [&hellip;]<\/p>\n","protected":false},"featured_media":715150,"template":"","meta":{"_acf_changed":false,"ep_exclude_from_search":false},"product_brand":[1638],"product_cat":[1691,1737],"product_tag":[],"class_list":{"0":"post-716471","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_brand-biotium","7":"product_cat-biotin-streptavidin-conjugates","8":"product_cat-biotium-biotinylation-reagents","10":"first","11":"instock","12":"taxable","13":"shipping-taxable","14":"purchasable","15":"product-type-simple"},"acf":[],"_links":{"self":[{"href":"https:\/\/immunomart.com\/wp-json\/wp\/v2\/product\/716471","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/immunomart.com\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/immunomart.com\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/immunomart.com\/wp-json\/wp\/v2\/media\/715150"}],"wp:attachment":[{"href":"https:\/\/immunomart.com\/wp-json\/wp\/v2\/media?parent=716471"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/immunomart.com\/wp-json\/wp\/v2\/product_brand?post=716471"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/immunomart.com\/wp-json\/wp\/v2\/product_cat?post=716471"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/immunomart.com\/wp-json\/wp\/v2\/product_tag?post=716471"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}