Adult cloth masks have a certain filtering effect on the air entering the lungs. When respiratory infectious diseases are prevalent, and when working in a polluted environment such as dust, wearing a mask has a very good effect. Masks can be divided into air filter masks and air supply masks.
NicotinamideMF：C6H6N2OMW：122.12CAS：98-92-0
trans-1-CinnamylpiperazineMF：C13H18N2MW：202.3CAS：87179-40-6
2-Methyl-5-nitroimidazoleMF：C4H5N3O2MW：127.1CAS：88054-22-2
O-Methyl-N-nitroisoureaMF：C2H5N3O3MW：119.08CAS：57538-27-9
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英文名称：4-DimethylaminopyridineMF：C7H10N2MW：122.17CAS：1122-58-3
4-Chloro-3,5-dinitrobenzoic acidMF：C7H3ClN2O6MW：246.56CAS：11...
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