Thiamine hydrochloride synthesis
- Product Name:Thiamine hydrochloride
- CAS Number:67-03-8
- Molecular formula:C12H17N4OS.ClH.Cl
- Molecular Weight:337.27
52164-53-1
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67-03-8
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Yield:67-03-8 94.7%
Reaction Conditions:
with hydrogenchloride;dihydrogen peroxide in water at -10; for 20 h;
Steps:
3 Example 3
A thiophene thiamine 50 g was added to a three-necked flask,31% hydrochloric acid 60 g,Into the freezer tank to cool down to minus 10 .Slowly dropping hydrogen peroxide 30g,Hydrogen peroxide content of 20%,When the temperature is controlled at minus 10 ° C,The reaction was then incubated at minus 10 ° C for 20 hours.After the insulation,Keep the temperature below 0 ,filter,Washed with 50 g of methanol,After drying the weight of chlorinated thiazolium hydrochloride 48.1 g,Yield 94.7%Quality analysis qualified.
References:
CN105884759,2016,A Location in patent:Paragraph 0027; 0028; 0029; 0030; 0031; 0032
13051-49-5
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$119.00/250mg
67-03-8
695 suppliers
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13045-13-1
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67-03-8
695 suppliers
$5.00/1g