ChemicalBook > CAS DataBase List > 6,7-dihydroxyquinazolin-4(3H)-one

6,7-dihydroxyquinazolin-4(3H)-one

Product Name: 6,7-dihydroxyquinazolin-4(3H)-one
CAS No.: 16064-15-6
Chemical Name: 6,7-dihydroxyquinazolin-4(3H)-one
Synonyms: Erlotinib Impurity 78;Erlotinib Impurity 84;6,7-Dihydroxyquinazolin-4-one;7-dihydroxyquinazolin-4(3H)-one;6,7-dihydroxy-3H-quinazolin-4-one;6,7-dihydroxyquinazolin-4(3H)-one;4(3H)-Quinazolinone, 6,7-dihydroxy-;6,7-Dihydroxy-3,4-dihydroquinazolin-4-one;6,7-dihydroxyquinazolin-4(3H)-one EL-7-107
CBNumber: CB92618309
Molecular Formula: C8H6N2O3
Formula Weight: 178.14
MOL File: 16064-15-6.mol

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6,7-dihydroxyquinazolin-4(3H)-one Property

Boiling point:: 478.6±55.0 °C(Predicted)
Density: 1.68±0.1 g/cm3(Predicted)
storage temp.: under inert gas (nitrogen or Argon) at 2-8°C
pka: 7.90±0.20(Predicted)

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Safety

HS Code: 2933599590

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Hazard and Precautionary Statements (GHS)

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N-Bromosuccinimide Price

BroadPharm

Product number: BP-21966
Product name: 6,7-dihydroxyquinazolin-4(3H)-one
Purity: 96%
Packaging: 100mg
Price: $240
Updated: 2021/12/16

BroadPharm

Product number: BP-21966
Product name: 6,7-dihydroxyquinazolin-4(3H)-one
Purity: 96%
Packaging: 1g
Price: $650
Updated: 2021/12/16

SynQuest Laboratories

Product number: 4H48-1-PX
Product name: 6,7-Dihydroxy-3,4-dihydroquinazolin-4-one
Packaging: 100mg
Price: $552
Updated: 2021/12/16

Alichem

Product number: 16064156
Product name: 6,7-Dihydroxyquinazolin-4(3H)-one
Packaging: 1g
Price: $561
Updated: 2021/12/16

Chemenu

Product number: CM210632
Product name: 6,7-Dihydroxyquinazolin-4(3H)-one
Purity: 95%
Packaging: 5g
Price: $1697
Updated: 2021/12/16

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6,7-dihydroxyquinazolin-4(3H)-one Chemical Properties,Usage,Production

Synthesis

13794-72-4

16064-15-6

General procedure for the synthesis of 6,7-dihydroxyquinazolin-4(3H)-ones from 6,7-dimethoxyquinazolin-4-one: (i) In a 2.0 L four-necked round-bottomed flask equipped with a mechanical stirrer, reflux condenser and thermometer, 48% (w/w) hydrobromic acid (1000 g) and 6,7-dimethoxy-4(3H)-quinazolinone (100 g) were added. The reaction mixture was slowly heated to 110 °C and kept at this temperature for 1 hour. The temperature was then raised to reflux conditions and refluxed for 12 hours. The reaction progress was monitored by TLC. After completion of the reaction, the reaction mixture was cooled to 25-35 °C and filtered. The wet filter cake was transferred to another 2.0 L round bottom flask containing 1000 ml of deionized water, stirred for 10-15 min and the pH was adjusted to 7.0-7.5 by addition of ammonia aqueous solution. the resulting product was filtered, and the filter cake was washed with deionized water, and dried to give 85.2 g (98.62% theoretical yield) of 6,7-dihydroxy-4(3H)-quinazolinone as an off-white crystalline solid. Purity: 99.25% (HPLC); Melting point: >250°C. IR (KBr, cm-1): 3208.7, 1679.0, 1614.5, 1514.7, 1427.7, 1374.3, 1316.2, 1293.9, 1261.0, 1214.5, 1195.5, 866.0, 845.3, 780.7, 523.7, 523.3, 523.7, 6,7-dihydroxy-4(3H)-quinazolinone. 780.7, 523.8, 449.2.1H NMR (300 MHz, DMSO-d6): δ 6.93 (s, 1H), 7.35 (s, 1H), 7.84 (s, 1H), 9.75 (s, 1H), 10.13 (s, 1H), 11.2-12.4 (s, 1H).MS: 179 (M+1), 177 (M -1).

References

[1] Patent: US2009/306377, 2009, A1. Location in patent: Page/Page column 5-6
[2] Patent: WO2016/123706, 2016, A1. Location in patent: Paragraph 00170
[3] Patent: WO2008/76949, 2008, A2. Location in patent: Page/Page column 11; 29
[4] Patent: WO2009/121042, 2009, A1. Location in patent: Page/Page column 39
[5] Patent: CN108727400, 2018, A. Location in patent: Paragraph 0055; 0057; 0059

6,7-dihydroxyquinazolin-4(3H)-one Preparation Products And Raw materials

Raw materials

Preparation Products

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