久久精品av,大陆成人av片,国产精品一久久香蕉国产线看观看 http://www.hbysgp.com The Leading Supplier of China Amine Catalysts Tue, 23 Apr 2024 06:58:11 +0000 zh-CN hourly 1 https://wordpress.org/?v=6.1.7 http://www.hbysgp.com/wp-content/uploads/2023/12/1.jpg Hypoxanthine – Amine Catalysts http://www.hbysgp.com 32 32 hypoxanthine http://www.hbysgp.com/archives/47876 Tue, 23 Apr 2024 06:58:11 +0000 http://www.hbysgp.com/archives/47876 Hypoxanthine structural formula

Structural formula

Business number 01FE
Molecular formula C5H4N4O
Molecular weight 136.11
label

1,7-dihydro-6H-purin-6-one,

6-Hydroxypurine,

6-Hydroxypurine,

6-oxopurine,

Hypoxanthine,

6-hypoxanthine,

Purine-6(1H)-one

Numbering system

CAS number:68-94-0

MDL number:MFCD00005725

EINECS number:200-697-3

RTECS number:UP0791000

BRN number:5811

PubChem number:24895850

Physical property data

1. Character:Needle crystal


2. Density (g/mL,25/4): Unsure


3. Relative vapor density (g/mL,AIR=1): Unsure


4. Melting point (oC):>360


5. Boiling point (oC,Normal pressure): Uncertain


6. Boiling point (oC, 5.2kPa): Unsure


7. Refractive index:Not sure


8. Flash point (oC): Unsure


9. Specific optical rotation (o): Unsure


10. Autoignition point or ignition temperature (oC): Unsure


11. Vapor pressure (kPa,25oC): Unsure


12. saturated vapor Pressure (kPa,60oC ): Unsure


13. Heat of combustion (KJ/mol): Unsure


14. Critical temperature (oC): Unsure


15. Critical pressure (KPa): Unsure


16. Oil and water (octanol/Log value of water) partition coefficient: Uncertain


17. Explosion limit ( %,V/V): Unsure


18. Lower explosion limit (%,V/V): Unsure


19. Solubility:Almost insoluble in water0.078/100m1(19)1.4g/100ml(100) . Soluble in dilute acids and alkalis, such as 0.5mol/LSulfuric acid or10mol /LSodium hydroxide

Toxicological data

Acute toxicity: mouse abdominal D50: 750 mg/kg;
Reproduction: mouse abdominal cavityTDLo600 mg/kgSEX/DURATION : female 13 day(s) after conception;
Mouse abdominal cavityTDLo1 gm/kgSEX/DURATION : female 13 day(s) after conception;

Ecological data

None

Molecular structure data

None

Compute chemical data

1. Reference value for hydrophobic parameter calculation (XlogP): None

2. Number of hydrogen bond donors: 2

3. Number of hydrogen bond acceptors: 2

4. Number of rotatable chemical bonds: 0

5. Number of tautomers: 8

6. Topological molecule polar surface area 70.1

7. Number of heavy atoms: 10

8. Surface charge: 0

9. Complexity: 190

10. Number of isotope atoms: 0

11. Determine the number of atomic stereocenters: 0

12. Uncertain number of atomic stereocenters: 0

13. Determine the number of chemical bond stereocenters: 0

14. Number of uncertain chemical bond stereocenters: 0

15. Number of covalent bond units: 1

Properties and stability

Together with xanthine, it is widely present in animals and plants. The inosinic acid of its nucleotide is the precursor of the purine nucleotide of nucleic acid. It is also the parent body of caffeine. Hypoxanthine can be produced through the action of adenine deaminase or nitrite.Purine deamination can also result in the phosphorolysis of inosine through nucleoside phosphorylase.

Storage method

This product should be kept sealed, cool and dry.

Synthesis method



Ethyl cyanoacetate, sodium ethoxide, and thiourea The combination reaction gives 2- Thiol-4-Amino -6-Hydroxypyrimidine , and then undergo nitrosation, reduction, elimination, and cyclization to obtain 6-Hydroxypurine.

Purpose

Anti-malignant tumor drugs6-Intermediate of mercaptopurine.

extended-reading:https://www.cyclohexylamine.net/low-odor-catalyst-9727-reaction-type-catalyst-9727/
extended-reading:https://www.cyclohexylamine.net/polyurethane-monosodium-glutamate-self-skinning-pinhole-elimination-agent/
extended-reading:https://www.cyclohexylamine.net/di-n-octyltin-oxide-dioctyltin-oxide-xie/
extended-reading:https://www.bdmaee.net/cas7560-83-0/
extended-reading:https://www.cyclohexylamine.net/c-225-foaming-retarder-c-225/
extended-reading:https://www.bdmaee.net/polyurethane-rigid-foam/
extended-reading:https://www.bdmaee.net/polyurethane-amine-catalyst-9727/
extended-reading:http://www.hbysgp.com/archives/category/products/page/129
extended-reading:https://www.bdmaee.net/wp-content/uploads/2022/08/-DC1-delayed-catalyst–DC1-delayed-strong-gel-catalyst–DC1.pdf
extended-reading:https://www.bdmaee.net/wp-content/uploads/2022/08/10.jpg

]]>
主站蜘蛛池模板: 湘西| 汝南县| 汶川县| 鹤壁市| 廉江市| 阿拉善盟| 台北县| 乐陵市| 伊春市| 隆德县| 铜陵市| 壤塘县| 延吉市| 格尔木市| 茌平县| 大悟县| 北京市| 桂阳县| 石台县| 河北省| 株洲市| 辽阳市| 孝昌县| 梅州市| 苏尼特右旗| 赫章县| 黎城县| 西乌珠穆沁旗| 灵川县| 西峡县| 泉州市| 韩城市| 久治县| 巫山县| 礼泉县| 南澳县| 赤峰市| 芦山县| 河北省| 鄂尔多斯市| 丰原市|