Buy CAS 39450-01-6 Proteinase K From Lab of Star-Selection

• Customization: Available
• CAS No.: 39450-01-6
• Formula: C29h27n2o12p
• Model NO.: Proteinase K
• Classification: High Purity Material
• Grade: LR
• Specific Usage: For Biological Purpose, Technical Grade
• Content: Standard
• Usage: Laboratory Reagents, Analytical Reagents
• Source: Dry Powder
• Habit Appellation: Chemical Medicine
• Application: Industry, Scientific Research
• Storage Environment: Low Temperature Drying
• Shelf Life: 3 Years
• MW: 358.21
• Transport Package: 1kg/Bag
• Specification: 1000kg
• Trademark: Star-Selection
• Origin: Huanggang
• HS Code: 000000
• Production Capacity: 100000kg/Year

Product Description

 

Product Description

 

 

 

CAS No.: 39450-01-6
EINECS No.: 3.4.21.64

Form: Lyophilized White Powder.
Source: Mutated gene from Tritirachium limber, Expressed in recombinant yeast.
Specific Activity: ≥34U/mg dry weights
Package: 100mg/Bottle, 1g/Bottle (Standard) or 1-200 gram Customer packing.
Storage Conditions:Store at 4 to -20ºC recommended.
Mutated Proteinase K powder is stable at room temperature in 3 years.
Expiration : Three years if kept below 4ºC.
Molecular Weight: 29,300 D
QC Assays:
Activity Assay and Unit Definitions: 
 One unit is defined as the amount of enzyme that will liberate 1 μmol of tyrosine per minute at 37º C, pH7.5.
DNase Activity: none detectable enzyme activity with λ DNA after 6 hours incubation at 37ºC.
RNase Activity: none detectable of ribnuclease activity after 16 hours incubation at 25 º C
Protein Purity: over 99% (Native-PAGE and SDS-PAGE assay)

 

 

Description	White  powder	Complies
Identification	IR	Complies
	HPLC	Complies
Heavy metal	≤10ppm	5ppm
Pb	≤3ppm	1.5ppm
Hg	≤0.1ppm	0.05ppm
Cd	≤1ppm	0.2ppm
Loss on drying	≤0.5%	0.12
Residue on lgnition	≤0.1%	0.03
Single impurity	≤0.5%	0.12
Total impurity	≤1.0%	0.29
Total bacteria	≤1000cfu/g	<1000
Yeast and Mould	≤100 cfu/g	<000
E.coli/25g	Absent	Absent
Salmonella/25g	Absent	Absent
Assay	≥99.0%	99.4%
Conclusion	Conforms with USP/EP standards

 

 

 

 

 

 

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Packaging & Shipping

 

 

 

Company Profile

 

Our Advantages

 

 

Our Advantages
1.Cooperate with research institutions, we strictly control the process from raw material to finished product.
2.The customer comes first, we provide reasonable price, high quality product and prompt shipment.
3.We can send the goods to your delivery address directly. It is relatively safe and fast. We have ready goods in stock.
4.Quick and clear response to customers questions. Warm after sale service, we will help to solve the problems in your usage.
5.We could make our price discount if you place a substantial order with us.
FAQ
1. Can i get some samples?
Yes, we can supply free sample, but the shipping cost be paid by our customers.
2. How to start orders or make payments?
Proforma invoice will be sent first after confirmation of order, enclosed our bank information. Payment by T/T, Western Union, L/C, Moneygram, BTC ,Escrow.
3. How to confirm the Product Quality before placing orders?
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.
4. How long is lead time?
We deliver goods within 3 days for small order, 7-10 days for bulk order. 
5. How do you treat quality complaint?
First of all, our quality control will reduce the quality problem to near zero. If there is a real quality problem caused by us, we will send you free goods for replacement or refund your loss.