Phenanthroline Derivative 1,10-Phenanthroline hydrate CAS 5144-89-8 Manufacturers

Potassium sorbate is the potassium salt of sorbic acid,is used as a food preservative.Potassium sorbate is effective in a variety of applications including food, wine, and personal-care products.

Polyethylene Terephthalate/PET CAS:25038-59-9

O-Cresol CAS:95-48-7

Butylated Hydroxytoluene CAS:128-37-0

China H&Z® L-Serine plays an important role in the catalytic function of many enzymes. It has been shown to occur in the active sites of chymotrypsin, trypsin, and many other enzymes. The so-called nerve gases and many substances used in insecticides have been shown to act by combining with a residue of serine in the active site of acetylcholine esterase, inhibiting the enzyme completely. The enzyme acetylcholineesterase breaks down the neurotransmitter acetylcholine, which is released at nerve and muscle junctions in order to allow the muscle or organ to relax. The result of acetylcholine inhibition is that acetylcholine builds up and continues to act so that any nerve impulses are continually transmitted and muscle contractions do not stop.

Succinic anhydride is white crystal,Succinic anhydride is the raw material of paint, medicine, synthetic resins and dyes.