1.Hot selling high quality Pyrimidine / 1.3-Diazabenzene with best price CAS 289-95-2

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1.Hot selling high quality Pyrimidine / 1.3-Diazabenzene with best price CAS 289-95-2
1.Hot selling high quality Pyrimidine / 1.3-Diazabenzene with best price CAS 289-95-2
1.Hot selling high quality Pyrimidine / 1.3-Diazabenzene with best price CAS 289-95-2
1.Hot selling high quality Pyrimidine / 1.3-Diazabenzene with best price CAS 289-95-2
1.Hot selling high quality Pyrimidine / 1.3-Diazabenzene with best price CAS 289-95-2
1.Hot selling high quality Pyrimidine / 1.3-Diazabenzene with best price CAS 289-95-2
1.Hot selling high quality Pyrimidine / 1.3-Diazabenzene with best price CAS 289-95-2

1.Hot selling high quality Pyrimidine / 1.3-Diazabenzene with best price CAS 289-95-2

  • Item No.TOP
    MOQ1 Kilogram
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If over 500pcs, mass production will start until pre-production sample has been approved.

Est. 7 days production

Quick Details
Appearance Clear colorless to orange Liquid
Place of Origin CN;SHN
Boiling point 123-124 °C(lit.)
Brand Name xigema
Model Number TOP
Application Pharmaceutical Intermediates
solubilitysoluble
Flash point 88 °F
density 1.016 g/mL at 25 °C(lit.)
Molecular Weight 80.09
Type Pharmaceutical Intermediates
CAS No. 289-95-2
Other Names 1,3-Diazabenzene
MFC4H2Cl2N2
EINECS No. C4H4N2
Purity99.5%

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Selling Units:
Kilogram
Product Description
 company
Pyrimidine, also known as"m-diazabenzene", is a six-membered aromatic heterocyclic compound containing two meta-nitrogen atoms, which is an isomer with pyridazine and pyrazine. Molecular formula C4H4N2. The molecular weight is 80.09. A colorless liquid or solid crystal with a pungent odor. The melting point is 20 to 22 °C. The boiling point of 123 ~ 124 ° C. The refractive index is 1.4998 (20 ° C). Easy to water, ethanol, ether, weakly alkaline, can form a salt with acid, its basicity is weaker than pyridine, electrophilic substitution reaction is also more difficult than pyridine, only bromination reaction can occur in the 5-position, can not occur nitrification and sulfonation The reaction, but more prone to nucleophilic substitution. Pyrimidine derivatives are widely found in nature. For example, vitamin B1, uracil, cytosine, and thymine all contain a pyrimidine structure. Its picrate is yellow needle crystal. The temperature of 156 ° C. Due to the presence of a conjugated double bond in the pyrimidine, it has a strong absorption of ultraviolet light. It is obtained by oxidation of barbituric acid with phosphorus oxychloride and reduction with hydriodic acid.
Nucleic acid contains three important pyrimidine derivatives, which are important bases in nucleic acids and play an important role in living organisms.
 
Description & Specification
 Category Pharmaceutical Raw Materials, Fine Chemicals, Bulk drug
StandardMedical standard
Shelf life2 years
 Storage should be stored in a well-closed container at low temperature, keep away from moisture, heat and light.
Test ItemStandard: USP 

Identification

IR spectrum similar to that of RS

HPLC retention time similar to that of RS

Related substance

Total impurities: NMT0.3%

Single impurity: NMT0.1%

 

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Company Information

Qingdao Sigma Chemical Co., Ltd.is a global chemical industry manufacturers and suppliers of pharmaceuticals and intermediates, food and feed additives, herbal extracts, agrochemicals and fine chemicals etc.

The aim of Qingdao Sigma Chemical Co., Ltd is a quality policy that"Elements in the system all have been satisfied, Personnel has been trained; Every batch of material is checked, Each procedure guarantees the quality; Every bag of our products is top grade, Service is thoughtful all the time, quality and reputation to increase market share and promote enterprise development. The quality, colors and forms of our products have reached a high level in related chemical industry, which relies on characteristic and advanced processing technology and it has gained a high and reliable reputation from customers at both quality and services.
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