Trypsin is a kind of serine proteolytic enzyme, with molecular weight of 23300 dalton, and is a single peptide chain composed of 223 amino acid residues. With rigorous specificity, the trypsin specifically acts on the peptide linkage constituted by the basic amino acid arginine and leucine. Enzyme easily autolyzes by itself, and its activation also reduces or loses gradually. It is easily soluble in the water, but insoluble in trichloromethane, ethanol, ether and glycerin, and the optimum PH is 8.0~9.0. When the PH is 1.8, it is hardly deactivated when boiled for a short time; if the salt is added into the hot solution, the protein will precipitate, and the enzyme action of filtrate cannot be seen, and Ca2+ plays the role in protecting and activating the trypsin.
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Our Company
Our company
Crovell dedicated to the development, production and marketing of chemicals which is specialized in pharmaceutical intermediates,Veterinary drug intermediates and Pesticide intermediates,our company is located in Shijiazhuang,Hebei Province. After-sale Service: We will supply flexible service ways, various service ways such as common sample free, online service, global exhibitions and meeting face to face will be accepted. Clients' satisfaction is our principle. Good reputation is our origin! Let us reach a brilliant new achievement hand-in-hand.
Inner double plastic bags--5kg/Aluminum foil bag (GW: 6.5kg, NW: 5kg);
Inner double plastic bags--1kg/Aluminum foil bag (GW: 1.5kg, NW: 1kg).
[Delivery] 5 working days after payment.
Shipping
1. Preferentially DHL or FedEx for quantity less than 50KG; Air shipping for 100KG above; Sea shipping for quantity over 500KG.
2. For customers from Russia, Mexico, Turkey, Slovenia, Romania, etc, before placing an order, please kindly confirm if you can make clearance when goods reach your customs.
FAQ
Q: How to start orders or make payments? A:You can send our your Purchase order(if your company has), or just send a simple confirmation by email or by Trade Manager, and we will send you Proforma Invoice with our bank details for your confirmation, then you can make payment accordingly.
Q: How to confirm the Product Quality before placing orders? A:You can get free samples for some products,you only need to pay the shipping cost or arrange a courier to us and take the samples. You can send us your product specifications and requests,we will manufacture the products according to your requests.
Q: What's your MOQ? A:For the high value product, our MOQ starts from 1g and generally starts from 10gs. For other low price product, our MOQ starts from 100g and 1kg.
Q: Is there a discount? A: Yes, for larger quantity, we always support with better price.
Q:How do you treat quality complaint? A:First of all, our quality control will reduce the quality problem to near zero. If there is a quality problem caused by us, we will send you free goods for replacement or refund your loss.
Q:How to contact us ? A:You can choose your interested products and send inquiry to us.You can dial our telephone directly, you will get our reply.Send Email to us.
