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生物来源
chicken (rooster comb)
质量水平
表单
powder
杂质
≤2% protein (Lowry)
颜色
white
溶解性
water: ~5 g/L
痕量阳离子
Na: 3-7%
储存温度
−20°C
SMILES字符串
[Na+].N([C@H]1[C@@H](O[C@@H]([C@H]([C@@H]1O[C@@H]4O[C@@H]([C@H]([C@@H]([C@H]4O)O)O)C(=O)O)O)CO)O[C@@H]2[C@H](O[C@H]([C@@H]([C@H]2O)O)O[C@@H]3[C@H]([C@@H](O[C@@H]([C@H]3O)CO)O)NC(=O)C)C(=O)O)C(=O)C
InChI
1S/C28H44N2O23.Na/c1-5(33)29-9-18(11(35)7(3-31)47-25(9)46)49-28-17(41)15(39)20(22(53-28)24(44)45)51-26-10(30-6(2)34)19(12(36)8(4-32)48-26)50-27-16(40)13(37)14(38)21(52-27)23(42)43;/h7-22,25-28,31-32,35-41,46H,3-4H2,1-2H3,(H,29,33)(H,30,34)(H,42,43)(H,44,45);/q;+1/t7-,8-,9-,10-,11-,12-,13+,14+,15-,16-,17-,18-,19-,20+,21+,22+,25-,26+,27-,28-;/m1./s1
InChI key
YWIVKILSMZOHHF-QJZPQSOGSA-N
储存分类代码
11 - Combustible Solids
WGK
WGK 2
闪点(°F)
Not applicable
闪点(°C)
Not applicable
个人防护装备
dust mask type N95 (US), Eyeshields, Gloves
历史批次信息供参考:
分析证书(COA)
Which document(s) contains shelf-life or expiration date information for a given product?
If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.
How do I get lot-specific information or a Certificate of Analysis?
The lot specific COA document can be found by entering the lot number above under the "Documents" section.
How do I find price and availability?
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What is the Department of Transportation shipping information for this product?
Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.
What is the molecular weight of Hyaluronic acid, Product H5388?
Product No. H5388 is a linear heteropolysaccharide with repeating 3-O-(β-D-glucuronido)-N-acetyl-D-glucosamine units linked by β-(1-->4)) hexosaminidic bonds. The molecular weight of this subunit has not been determined, but could be calculated from the information above. Molecular weights of hyaluronic acids vary from 0.1-10 million, depending on the source. The hyaluronic acid from rooster comb is expected to have a molecular weight of 1-4 million.
What is the purity of Hyaluronic acid, Product H5388?
Sigma does not perform purity testing on this product due to the variable molecular weight and degradation that may occur in native glycosaminoglycans. This product is tested for activity and protein content which provide information regarding impurities and suitability.
What is the solubility of Hyaluronic acid, Product H5388?
For Sigma's analytical test, 15 mg of this product is dissolved in 5 mL of 0.3 M phosphate buffer, pH 5.35 at 25°C (i.e., 3 mg/mL).
My question is not addressed here, how can I contact Technical Service for assistance?
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商品
有五种已发现的糖胺聚糖链（参见图1）透明质酸不是硫酸化的，但其他糖胺聚糖链在链的不同位置含有硫酸根取代基。
Uncover more about glycosaminoglycans and proteoglycans including the structure of glycosaminoglycans (GAGs), the different types of GAGs, and their functions.
Glycosaminoglycans are large linear polysaccharides constructed of repeating disaccharide units.
实验方案
To measure hyaluronidase activity, a turbidimetric determination assay is used at 600 nm. One unit of hyaluronidase activity will cause a change in absorbance of 0.330 per minute at pH 5.35 at 37 °C.
在测定透明质酸酶活性时，使用了一种在600 nm处的比浊测定法进行测定。在pH 5.35、37 °C下，一单位的透明质酸酶活性可每分钟引起0.330的吸光值改变。
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