If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf
B4639
生物素
powder, BioReagent, suitable for cell culture, suitable for insect cell culture, suitable for plant cell culture, ≥99%
别名:
D-生物素, Bios II, 维生素B7, 维生素H, 辅酶 R
About This Item
推荐产品
產品線
BioReagent
品質等級
化驗
≥99%
形狀
powder
分子量
Mw 244.31 g/mol
技術
cell culture | insect: suitable
cell culture | mammalian: suitable
cell culture | plant: suitable
顏色
white to off-white
mp
231-233 °C (lit.)
溶解度
H2O: 0.2 mg/mL (Solubility increases with addition of 1 N NaOH.)
儲存溫度
2-8°C
SMILES 字串
[H][C@]12CS[C@@H](CCCCC(O)=O)[C@@]1([H])NC(=O)N2
InChI
1S/C10H16N2O3S/c13-8(14)4-2-1-3-7-9-6(5-16-7)11-10(15)12-9/h6-7,9H,1-5H2,(H,13,14)(H2,11,12,15)/t6-,7-,9-/m0/s1
InChI 密鑰
YBJHBAHKTGYVGT-ZKWXMUAHSA-N
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相關產品
儲存類別代碼
11 - Combustible Solids
水污染物質分類（WGK）
WGK 1
閃點（°F）
Not applicable
閃點（°C）
Not applicable
個人防護裝備
Eyeshields, Gloves, type N95 (US)
历史批次信息供参考:
分析证书(COA)
其他客户在看
商品
Importance and uses of biotin in serum-free eukaryotic, including hybridoma and Chinese Hamster Ovary (CHO) cell, cultures
Importance and uses of biotin in serum-free eukaryotic, including hybridoma and Chinese Hamster Ovary (CHO) cell, cultures
Importance and uses of biotin in serum-free eukaryotic, including hybridoma and Chinese Hamster Ovary (CHO) cell, cultures
Importance and uses of biotin in serum-free eukaryotic, including hybridoma and Chinese Hamster Ovary (CHO) cell, cultures
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How can I determine the shelf life / expiration / retest date of this product?
1 answer-
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How is shipping temperature determined? And how is it related to the product storage temperature?
1 answer-
Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
Helpful?
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If I would like to make 1M biotin stock (B4639), what would be the best way?
1 answer-
A 1 M solution of biotin would require a concentration of 244 mg/mL. The maximum solubility tested for this compound is 50mg/ml in 2M NaOH or NH4OH, which results in a 204 mM solution. Similar rates have been reported for DMSO. Heat and agitation may improve the solubility. However, a precipitate may form upon cooling. A search of the literature did not reveal a more efficient solvent for Biotin. The preparation of a 1M solution would have to be determined experimentally.
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Hello, How can I reconstruct biotin powder (B4639)? which solvent? and how can I prepare 50mM biotin solution for 1 ml final solution?
1 answer-
This product is soluble in 50 mg/ml 2 M NH4OH.
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