Hebei Nengqian Chemical Import and Export Co., LTD
Assessed Supplier Enterprise Certification
- Assessed
Supplier - 4th
years
Assessed Supplier Enterprise Certification
Product Certification&
Enterprise Certification
Country: 
China (Mainland)
Business Type:Trading Company
Tel: 86-139-10575315
Tel: +86 15632961819
Tel: +86 18233902561
Tel: +86 15717685612
Tel: +86 16630923639
Tel: +86 18732968538
Tel: +86 18833033983
Tel: +86 19831957301
Mobile: +86 19831957301
Tel: 86-139-10575315
Fax: 4001020630
URL: https://www.nengqianchemical.com/
Province/state: Hebei
City: Handan
Street: Congtai District, La Defense North
MaxCard:
Ms.AnnaCAS NO.23666-13-9
Pharmaceutical grade(1-50)KilogramPharmaceutical grade(51-99)Kilogram
Our Advantage
Rich Experience
Our products are sold all over Europe,North&South America, Sino-East, Asia and pacific area as well as Africa,we establish long term.
Quality service
Company cooperates with research institutes. We strictly control the process of raw materials up to finished product.
24 hour service
Quick and clear response to customers questions. Warm after sale service, we will help to solve the problems in your usage.
High quality
Dedicated to serving customers first, we provide reasonable prices, high quality products.
1) Standard:BP/USP/EP/Enterprise standard
2) All Purity≥99%
3) We are manufacturer and can provide high quality products with factory price.
2, Fast and safe delivery
1) Parcel can be sent out in 24 hours after payment.Tracking number available
2) Secure and discreet shipment.Various transportation methods for your choice.
3) Customs pass rate ≥99%
4) We have our own agent/remailer/distributor who can help us ship our products very fast and safe,
and we have stock in there for transferring.
| Density | 1.758±0.06 g/cm3(Predicted) |
| Melting Point | >250 °C (decomp) |
| Boling Point | 974.7±65.0 °C(Predicted) |
| Specific Rotation(α) | +25 (c, 0.21 in Py). +71 (c, 0.36 in H2O) |
| Flash Point | 323.7°C |
| Solubility | Soluble in methanol, ethanol, DMSO and other organic solvents |
| Vapor Presure | 0mmHg at 25°C |
| Appearance | Powder |
| Color | Light Yellow to Yellow |
| pKa | 5.68±0.40(Predicted) |
| Storage Condition | Hygroscopic, -20°C Freezer, Under inert atmosphere |
| Stability | Hygroscopic |
| Refractive Index | 1.748 |
| MDL | MFCD08458851 |
| Physical and Chemical Properties | White crystalline powder, soluble in methanol, ethanol, DMSO and other organic solvents, from Desmodium. |
| introduction | vetzenin -2 is also called new zealand vitexin 2. at present, there are very few research reports on its pharmacological activities in China, but more attention has been paid abroad, and it has been reported that it has a variety of pharmacological activities. It includes effective anti-inflammatory effects on a variety of inflammatory cells and animal models, especially for vascular inflammation; anti-thrombotic and anti-platelet activity; treatment of diabetes; antispasmodic effect; combined with docetaxel Play the anti-prostate cancer effect and induce apoptosis and anti-oxidation of liver cancer HepG2 cells. |
| preparation | the method for simultaneously separating xiafotin, vitening -2 and ecdysone includes taking about 5kg of dried pulverized lacquer grass and extracting it with 90%(V/V) ethanol three times, once a day, the extract was collected and combined, concentrated under reduced pressure until it was alcohol-free and slightly viscous, and the concentrated solution was dispersed with a small amount of water and then extracted with petroleum ether (60-90 ℃), ethyl acetate and n-butanol for 5-6 times, respectively. The extract of the n-butanol extraction site is divided into AB-8 macroporous resin twice, and the ratio of the sample to AB-8 macroporous resin is about 1:5 (left and right can float). After the sample is dissolved in hot water, the AB-8 macroporous resin resin column is added, and the ethanol solution of pure water, 30%, 50% and 70% is used for elution in sequence, TLC detection found that the target components to be separated (Shafeta glycoside, vicenin -2 and ecdysone) are mainly concentrated in the ethanol elution part of the 50%, and the ethanol elution part of the 50% is collected and concentrated under reduced pressure to obtain extract. The extract of the 50% ethanol elution part obtained above is dissolved with an eluent and then wet-applied to an ODS reversed-phase chromatography column. The ratio of the sample to the ODS filler is about 1:80 (which can float around), and methanol: water = 1:1.5 is used as the elution solvent for elution (the ratio of the elution agent can be adjusted according to the specific conditions of TLC on this basis). TLC detects and combines the same components until all the target components flow out, compound A (ecdysone), impurity-containing compound B (vicenin -2) and impurity-containing compound C (xiapotalin) were obtained. The impurity-containing compound B (vicenin -2) and the impurity-containing compound C (xiapotalin) were further separated and purified by silica gel column respectively, and the elution system was made of ethyl acetate-methanol-water, and the ratio was ethyl acetate: methanol: water ≈ 8:1:1 (which can be adjusted according to the specific conditions of TLC on this basis). TLC was detected and combined with the same components until all the target components flowed out, to obtain compound B (vicenin -2) and compound C (xiapotalin). |
| biological activity | Vicenin 2 comes from the aboveground part of Desmodium styrum (Desmodium styracifolium). Vicenin 2 is an angiotensin-converting enzyme (ACE) inhibitor with an IC50 of 43.83 μM. |
| chemical properties | white crystalline powder, soluble in methanol, ethanol, DMSO and other organic solvents, derived from Desmodium styrum. |
| use | new zealand vitexin 2 has anti-cancer, antihypertensive, anti-inflammatory and antispasmodic effects. used for content determination/identification/pharmacological experiment, etc. |
Product Packaging：
1) 1kg/bag (1kg net weight, 1.1kg gross weight, packed in an aluminum foil bag)
2) 25kg/drum (25kg net weight, 28kg gross weight; Packed in a cardboard-drum with two plastic-bags inside; Drum Size: 510mm high, 360mm diameter)
Storage：
Stored in a cool and dry well-closed container. Keep away from moisture and strong light/heat.
Delivery：
Usually within3-5 working days after full payment.
transport：
EMS,DHL, TNT, UPS ,FEDEX, BY AIR, BY SEA
DHL Express, FedEx and EMS for quantity less than 50KG, usually called as DDU service;
Sea shipping for quantity over 500KG; And air shipping is available for 50KG above;
For high value products, please select air shipping and DHL express for safe;
Our Service:
1. Fast Delivery: We can delivery within 24 hours upon receipt of your payment.
2. Quality can be promised. Hot sell to Worldwide.
3. Payment Terms: T/T,, t/t
4. Free Sample available at any time.
5. Tracking your order at any time. Inform your order's further new situation at any time.
6. Package: Professional packing with professional materials.
Packing:
1. Inner double plastic bags----25kg/Fiber drum (35*35*45cm, GW: 28kg, NW: 25kg);
2. Inner double plastic bags----5kg/Aluminum foil bag (GW: 6.5kg, NW: 5kg).
3. Inner double plastic bags----1kg/Aluminum foil bag (GW: 1.5kg, NW: 1kg).
P.S.: we accept packaging customization.
Delivery:
1. Stock products are normally shipping within 3 working days.
2. For rush delivery, please contact our sales team for particular arrangement.
Shipping Details:
1. We ship goods via DHL, Fedex, UPS, TNT, China post, NL Post and other couriers, weight from 10g to 1000kg or even bulker.
2. Shipping details & shipping documents will be provided and sent by email.
3. We keep tracking the shippment until clients well received.
4. After years export shipping experience, with professional and experienced cooperated forwarders, we ensure that goods can be delivered in multiple ways safetly and efficiently.
About us
Our company specializes in processing and selling chemical raw materials, chemical products, pharmaceutical intermediates, veterinary medicine intermediates, dye intermediates, pigments, cosmetics raw materials and chemical reagents,
We have compalete sales and service team , information feedback vertical integration of a sound marketing network, products are sold throughout the country and exported to South Asia, Europe, America, Africa and other more than 20 countries and regions.
Companies adhering to the "pursuit of quality, innovation and development" business philosophy, to serve as a foundation, for the survival by the quality, seek development by science and technology, adhere to quilty comes first,fair price,good sense of customer service and responsibility. in the future hebei Nengqian import and export trade Co.,Ltd will always hold "integrity, innovation" business philosophy, to achieve honesty management, on the way of specialization, internationalization, Keep moving!
FAQ:
1. Are you a trade company or factory
We are a factory with our own trading company.
2.How do you control the quality
Our factory is equipped with professional technicians to control quality, out inspectors take sample for testing every 2 hours to ensure the quality of our production. We also accept BV, SGS or any other Third-party inspection.
3. How long is lead time
We deliver goods within 3 days for small order, 7-10 days for bulk order.
4. Where is your factory located How can I visit the factory
Our factory located in HEBEI, China.
5. Can i get some samples
Yes, we can supply free sample, but the shipping cost be paid by our customers.
6. 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,
7. 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.
8. How long is lead time
We deliver goods within 3 days for small order, 7-10 days for bulk order.
9. How do you treat quality complaint
First of all, our quality control will reduce the quality problem to near zero. If there is a realquality problem caused by us, we will send you free goods for replacement or refund your loss.