There will be a HazMat fee per item when shipping a dangerous goods. The HazMat fee will be charged to your UPS/DHL/FedEx collect account or added to the invoice unless the package is shipped via Ground service. Ship by air in Excepted Quantity (each bottle), which is up to 1g/1mL for class 6.1 packing group I or II, and up to 25g/25ml for all other HazMat items.
Type | HazMat fee for 500 gram (Estimated) |
Excepted Quantity | USD 0.00 |
Limited Quantity | USD 15-60 |
Inaccessible (Haz class 6.1), Domestic | USD 80+ |
Inaccessible (Haz class 6.1), International | USD 150+ |
Accessible (Haz class 3, 4, 5 or 8), Domestic | USD 100+ |
Accessible (Haz class 3, 4, 5 or 8), International | USD 200+ |
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CAS No. : | 26782-75-2 | MDL No. : | MFCD00210114 |
Formula : | C5H9BrO2 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | - |
M.W : | 181.03 | Pubchem ID : | - |
Synonyms : |
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Signal Word: | Danger | Class: | 8 |
Precautionary Statements: | P280-P305+P351+P338-P310 | UN#: | 3261 |
Hazard Statements: | H302-H312-H314-H332 | Packing Group: | Ⅱ |
GHS Pictogram: |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
74% | With hydrogenchloride; sodium nitrite In water | |
72% | With hydrogen bromide; sodium nitrite In water; toluene at -5 - 20℃; | |
69% | With hydrogen bromide; sodium nitrite In water |
69% | With sulfuric acid; potassium bromide; sodium nitrite at 0 - 20℃; | |
62% | With sulfuric acid; potassium bromide; sodium nitrite at 0℃; for 1.5h; | 1. Preparation of α-bromo acids 1 - 3 General procedure: To a stirred solution of an α-amino acid (1 eq.) containing potassium bromide (3 eq.) in sulfuric acid (1.5 M) at 0 °C was added sodium nitrite (1.2 eq.) portionwise over a 30 min period maintaining the temp. at or near 0 °C. The resulting solution was stirred for 1 h and then extracted with ethyl acetate (3 × 40 mL). The organic extract was dried and evaporated to give the product which was purified as stated. |
59% | With sulfuric acid; potassium bromide; sodium nitrite at -10℃; for 3h; Inert atmosphere; optical yield given as %ee; | |
55% | With sulfuric acid; potassium bromide; sodium nitrite at 0℃; | |
With nitrosyl bromide | ||
With hydrogen bromide | ||
With hydrogen bromide; sodium nitrite | ||
With hydrogen bromide; sodium nitrite at 0℃; for 4h; | ||
With potassium bromide; sodium nitrite In sulfuric acid at 0℃; for 1h; | ||
With sulfuric acid; potassium bromide; sodium nitrite at 0 - 5℃; | ||
With hydrogen bromide; sodium nitrite | 7 EXAMPLE 7 EXAMPLE 7 (S)-2-bromo-3-methylbutanoic acid is prepared following the procedure of Example 6 from (S)-valine and sodium nitrite and 6 N hydrogen bromide. Specific rotation of the bromo acid is [α]D25 =-17.2° (c=10% in methanol). | |
With sulfuric acid; potassium bromide; sodium nitrite In water at 5 - 20℃; for 5h; Cooling with ice; | ||
With sulfuric acid; potassium bromide; sodium nitrite In water | ||
With sulfuric acid; potassium bromide; sodium nitrite at -10℃; for 3h; | ||
With hydrogen bromide; potassium bromide; sodium nitrite at -13℃; | ||
With hydrogen bromide; potassium bromide; sodium nitrite at -13℃; enantiospecific reaction; | ||
With sulfuric acid; potassium bromide; sodium nitrite at -10℃; for 6h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1.1: Inert atmosphere 2.1: tetrahydrofuran; 1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone; indium(III) chloride; indium; chloro-trimethyl-silane; triethylamine / 10 - 30 °C / Inert atmosphere; Sonication 2.2: Saturated solution |