Nsp-sa-nhs is not only the internal salt of acridine sulfonylhydrazine amine, but also the active ester. Compared with the pure acridine ester, nsp-sa-nhs has better hydrolysis resistance and better stability when the pH value is less than 4.8.
Appearance
The appearance of nsp-sa-nhs is golden yellow powder, which may be in the form of yellow solid in the frozen state. However, after thawing, it is a loose powder with a very fine texture. Therefore, it is necessary to be careful when loading and unloading to avoid waste caused by spilling.
Packing
Chemiluminescence reagents are usually stored in opaque bottles, and nsp-sa-nhs is no exception. Brown bottles are used, including 10mg and 50mg, of course, 1g large package is also available.
Price
Nsp-sa-nhs is relatively moderate among six acridine esters with different groups, and the price will be determined according to the amount of customers. The reason is that small amount of sub packaging will cause the loss of the product itself. In fact, the price fluctuation is still relatively large, 200-60 yuan / mg. Of course, if it's a dealer, the price will be more expensive.
Preservation
Nsp-sa-nhs is the same as other acridine esters. It is sealed and protected from light, stored at 2-8 ℃ for one year, and can be stored for a longer time at - 20 ℃. Moreover, the photoquantum yield of nsp-sa-nhs and protein conjugates does not decrease when stored at room temperature for 4 weeks. This is also a major feature of nsp-sa-nhs.
Because the essence of the antibody is protein, it contains amino groups, which can directly react with NSP-SA-NHS and couple.
Cas199293-83-9, c32h31n3o10s2, molecular weight 681.7, is commonly used in chemiluminescence labeling, immunoluminescence, etc. The purity is higher than 98% according to different manufacturers. This acridine salt and nsp-dmae-nhs are the two most commonly used acridine ester series.
