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/418/501/product-dating-information-06-25-mk.pdf
163260
4-氯-7-硝基苯并-2-氧杂-1,3-二唑
98%
别名:
4-氯-7-硝基-1,2,3-苯并噁二唑, NBD-chloride
关于此项目
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化驗
98%
形狀
powder
mp
97-99 °C (lit.)
溶解度
chloroform: soluble 50 mg/mL, clear to slightly hazy, faintly yellow to yellow
官能基
chloro
nitro
SMILES 字串
[O-][N+](=O)c1ccc(Cl)c2nonc12
InChI
1S/C6H2ClN3O3/c7-3-1-2-4(10(11)12)6-5(3)8-13-9-6/h1-2H
InChI 密鑰
IGHBXJSNZCFXNK-UHFFFAOYSA-N
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此商品 | 25455 | 140112 | 24940 |
|---|---|---|---|
| assay 98% | assay ≥97.0% (HPLC) | assay 99% | assay ≥98.0% (HPLC) |
| Quality Level 100 | Quality Level 100 | Quality Level 100 | Quality Level 200 |
| solubility chloroform: soluble 50 mg/mL, clear to slightly hazy, faintly yellow to yellow | solubility - | solubility chloroform: soluble 50 mg/mL, clear to very slightly hazy, faintly yellow | solubility methanol: soluble 1 g/10 mL, clear, colorless, water: soluble |
| form powder | form - | form solid | form pellets |
| mp 97-99 °C (lit.) | mp 97-100 °C, 97-99 °C (lit.) | mp 70-73 °C (lit.) | mp 63-65 °C (lit.) |
| functional group chloro | functional group - | functional group chloro, nitro | functional group - |
一般說明
訊號詞
Warning
危險聲明
危險分類
Eye Irrit. 2 - Skin Irrit. 2
儲存類別代碼
11 - Combustible Solids
水污染物質分類（WGK）
WGK 3
個人防護裝備
dust mask type N95 (US), Eyeshields, Faceshields, Gloves
商品
The Diels–Alder reaction is the reaction between a conjugated diene and an alkene (dienophile) to form unsaturated six-membered rings. It is also referred to as a cycloaddition.
The Diels–Alder reaction is the reaction between a conjugated diene and an alkene (dienophile) to form unsaturated six-membered rings. Since the reaction involves the formation of a cyclic product via a cyclic transition state, it is also referred to as a "cycloaddition".
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How can I determine the shelf life / expiration / retest date of this product?
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How is shipping temperature determined? And how is it related to the product storage temperature?
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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
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