DAFO CAS NO.50890-67-0 CAS NO.50890-67-0

High quality and stable supply quickly to ensure that there is a problem within a year unpaid refunds

CAS NO.50890-67-0

Suzhou yacoo science co.,LTD was founded in 2003. It is a high-tech enterprise which specializing in biomedicine, electrochemical materials, import and export business, electronic mall, Up to now，It has 10 years history on chemical sales, R & D and production operations. Company also set sales and service outlets in Shanghai, Beijing, Guangzhou, Jinan and other cities, which owning first-class marketing team and technical support personnel. Its famous brands-Yacoo were exported to Europe, America and Southeast Asian countries. In order to meet the demand of the market of High-tech industrial products which updates fast, respones service timely, requires high technical and grows rapidly , Yacoo has established 5000㎡  research and test center and 10000㎡ production base， which have passed ISO9001: 2008 quality system certification.

Yacoo corporation provides more than 20000 kinds of products of scientific research for Chinese and global customers with rapid logistics network, quality of service. At the same time ,it also provides customers with research and custom synthesis products from grams to tons，which  relying  on its own unique synthesis technology and rich R & D experience。

The E-commerce site "Elements Mall" (www.b2star.com) belonging to Yacoo was formally operated in September 2012, which integrating domestic and international quality supplier of channel, and has realized one-stop shopping and services of the reagents and instruments, we dedicat to building a comprehensive professional services platform for Chinese scientists and echnology enterprises。

Yacoo always adheres to customer demand-oriented, adhering to the continuous innovation as the support, adhering to provide quality products and technical solutions to customers。Our goal is to create ourself to become the leading international supplier and service provider of biological medicine and chemical material.

MP:214-216 ℃

Description:

> Formula: C₁₁H₆N₂O

> Weight: 182.18

> Appearance:Yellow crystal

> MP:214.0-216.0

> Storage: 2-8℃

> Safety Description: S26-37/39

> Danger Description: R36/37/38

> Danger Symbol: Xi

1. Applications:

A. DAFO is used as a reagent for biochemical experiments, synthetic laboratory.

2. Location

A. biology/biochemistry laboratory, synthetic laboratory, pharmaceutical factory

3. Note:

Synonyms:

AKOS BBS-00000188;5H-PYRIDO[3',2':4,5]CYCLOPENTA[1,2-B]PYRIDIN-5-ONE;4,5-DIAZAFLUOREN-9-ONE;4,5-Diaza-9-fluorenone;4,5-Diaza-9H-fluoren-9-one;Dafo;4,5-DIAZAFLUOREN-9-O;4,5-DIAZAFLUORENE-9-ONE;5H-Cyclopenta[2,1-b:3,4-b']dipyridin-5-one; 5H-Pyrido[3',2':4,5]cyclopenta[1,2-b]pyridin-5-one; 5H-cyclopenta[1,2-b:5,4-b']dipyridin-5-one; DAFO; 4,5-Diazafluoren-9-one

Related categories:

Electronic Chemicals;Heterocyclic Building Blocks;N-Containing;Others

Related Products:54078-29-4;19437-26-4;1662-01-7;27318-90-7;66-71-7

Determination of melting point

   Instrument:

   Micro melting point apparatus WRS-2A, Melting point tubes

  Determination of step:

Open switch, stable 20min.

First set the starting temperature than the melting point of the low 10 ℃, heating rate 2 ℃ / min.

The sample was grind as fine as possible and load in a clean, dry melting point pipe ,until the sample was compressed into about 1cm high .When the actual temperature reaches the set temperature and stabilized . Inserted into the capillary with the sample, the simultaneous determination of three.

The determination of Loss on drying

  Weigh a sample of approximately 2g (weighing accuracy 0.0001g),Record the weight of m,The sample was placed in a Petri dish constant weight (weight recorded as m0), the tile, the thickness of not more than 5mm, into the oven (As next dish cover removed) drying at 105-110 ℃ 3 hours.When removing, make sure the dish cover,be placed in a desiccator to cool, then weighed and the weight (including surface dish) m1.

Loss on drying in accordance with the following formula:

Where:

         m-- sample, g

       m0-- dish, g

          m1-- After drying the quality of the sample and the dish, g