TdB位于瑞典乌普萨拉，最初是一家成立于1990的咨询公司。现业务涵盖制药、诊断及生物技术领域研发的众多产品，产品大多基于葡聚糖及蔗糖、菊糖、透明质酸、粘多糖等其他多糖。TdB在多糖领域具有丰富的经验，研发设备齐全，目前生产批量高达5-10公斤。
约20年前，TdB研发出用于诱导实验动物结肠炎的硫酸葡聚糖，该产品是研究肠炎病因及炎症治疗的“金标准”。TdB硫酸葡聚糖包括不同的分子量、硫酸化程度及合成方式，选择众多，满足不同实验需求。其他葡聚糖衍生物包括羧甲基衍生物、硫醇衍生物等，FITC-葡聚糖和TRITC-葡聚糖用于方便、灵敏的检测血管、组织和细胞膜的通透性。TdB可提供不同分子量和不同发色基团含量的葡聚糖衍生物，并可添加阳离子或阴离子电荷。

Our standard product portfolio consists of both fluorescent and non-fluorescent polysaccharide derivatives. Our focus is dextran derivatives, but we also offer derivatives of other polysaccharides such as polysucrose, inulin, hyaluronic acid, trehalose and hydroxyethyl starch.

Our products are widely employed within the life science sector. Our fluorescent derivatives are mainly used for studies of permeability and microcirculation in cells and tissues, for studies of drug delivery or as molecular size markers. Our fluorescent products include derivatives labelled with FITC,
TRITC, ATTO™-dyes and our proprietary Antonia Red™-dye.

Our non-fluorescent derivatives include e.g. dextran sulfates and charged polysaccharides with functional groups like carboxymethyl (CM), diethylaminoethyl (DEAE) and quaternary-ammonium (Q). One of our most popular products is dextran sulfate sodium (DSS), which has been used to induce colitis in mice and rats for more than 20 years. Dextran sulfates of lower molecular weights are often used as a cell media additive or as stabilisers. Our blue dextran is often used as a void volume marker in chromatography. Our phenyl-dextran may be used in the preparation of hydrophobic gels and coatings.

瑞典TDB产品通过ISO9001认证.主要产品如下:

葡聚糖硫酸钠(DSS)；硫酸葡聚糖（DS，硫含量高低可选）；葡聚糖季铵盐；苯基葡聚糖；羧甲基葡聚糖/聚蔗糖；DEAE葡聚糖/聚蔗糖；FITC标记的葡聚糖/聚蔗糖/菊糖/海藻糖/硫酸葡聚糖/羧甲基葡聚糖/羧甲基聚蔗糖/DEAE葡聚糖/DEAE聚蔗糖；蓝色葡聚糖；TRITC标记葡聚糖/聚蔗糖/羧甲基聚蔗糖；ATTO葡聚糖；聚蔗糖；荧光素透明质酸；四甲基罗丹明透明质酸。

现货提供以下多糖衍生物试剂，主要用于药物代谢，结肠炎造模等研究领域。汉诺联合美国Biopal公司，提供肾脏GFR分析，详细情况客户可以与我们联系。以下产品均来自瑞典TDBcons公司，我们全权负责其产品的国内的销售和售后服务。

以下产品中，FITC-Dextran与 TRICT-Dextran的区别在于，TRICT荧光对pH不敏感，而且它不与动脉血管壁结合。