Entecavir Powder CAS 142217-69-4

Product introduction：

Cas:142217-69-4

Other names: entecavir hydrate, entecavir

Water: 5.8%—6.5%

Residue on ignition: ≤0.1％

Heavy metals: ≤20ppm

Assay: 98.0%–102..0%

Description: Entecavir powder cas 142217-69-4 is an antiviral drug with activity against hepatitis B viral polymerase. As Entecavir powder cas 209216-23-9 is an analogue of the nucleoside guanosine, it competes with the enzyme’s usual substrate. This reduces the synthesis of viral DNA. Entecavir is therefore indicated when there is evidence of viral replication.

How it works: Entecavir powder cas142217-69-4 is a reverse transcriptase inhibitor that works by preventing the hepatitis B virus from multiplying and thereby decreasing the amount of the virus in the body. However, it is important to note that entecavir is not a cure for HBV and it may not prevent damage to the liver or reduce the chances of developing liver cancer. In addition, Entecavir powder cas 142217-69-4 doesn’t prevent the spread of HBV to others through the normal routes of transmission, including sexual contact or exposure to blood or bodily fluids.

Other chemical names: Entecavir hydrate/entecavir, Entecavir Monohydrate IsoMers, 2-Amino-1,9-dihydro-9-[(1S,3R,4S)-4-hydroxy-3-(hydroxymethyl)-2-methylenecyclopentyl]-6H-purin-6-one monohydrate

Certificate of analysis

Items	Specifications	Results
Appearance	White to off-white powder	White powder
Identification	1)The IR absorption spectrum of the sample must be concordant with entecavir 2) RT of the sample should match that of standardin assay preparation	Conform
	2) RT of the sample should match that of standard in assay preparation	Conform
Water	5.8%—6.5%	6.1%
Optical rotation	+24.0°—+28.0°(DMF: Me OH=1:1 c=1%)	+27.0°
Residue on ignition	≤0.1%	0.07%
Heavy metals	≤20ppm	＜20ppm
Related substances	Total impurities ≤0.3%	0.06%
	Any individual impurity≤0.1%	0.02%
Residual solvents	dichloromethane≤600ppm methanol≤3000ppm ethyl acetate≤5000ppm toluene≤890ppm	not detected 200ppm not detected not detected
Assay	98.0%–102..0%	99.9%
Particle size	95% of the particles should be within 125um	Conform

Entecavir powder cas 142217-69-4 packing

1. 1kg/bag (1kg net weight, 1.1kg gross weight, packed in an aluminum foil bag)
2. 5kg/carton(1kg net weight, 1.1kg gross weight, packed in five aluminum foil bag)
3. 25kg/drum (25kg net weight, 28kg gross weight; packed in a cardboard-drum with two plastic-bags inside; Drum Size: 510mm high, 360mm diameter)

 

FAO
Q1: Can I get some samples?
A: Yes, we can supply the free sample, but the shipping cost be paid by our customers.

Q2: How to start orders or make payments?
A: Pro forma invoice will be sent first after confirmation of the order, enclosed is our bank information. Payment by T/T, Western Union or , Remitly.

Q3: 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.

Q4: What’s your MOQ?
A: Our MOQ is 1 kg. But usually, we accept less quantity such as 100g on the condition that the sample charge is 100% paid.

Q5: How to contact us?
A: You can chat with us by WhatsApp, Telegram, Signal, Skype Line, or WeChat. You can choose your interested products and send an inquiry to us. You can dial our telephone directly; you will get our reply. Email us.