4(3H)-Quinazolinone, 5,6,7,8-tetrahydro-2-methyl-

Modify Date: 2025-09-26 15:17:50

4(3H)-Quinazolinone, 5,6,7,8-tetrahydro-2-methyl- Structure
4(3H)-Quinazolinone, 5,6,7,8-tetrahydro-2-methyl- structure
 Common Name 4(3H)-Quinazolinone, 5,6,7,8-tetrahydro-2-methyl-
CAS Number 19178-21-3 Molecular Weight 164.20400
Density 1.3g/cm3 Boiling Point 291.2ºC at 760 mmHg
Molecular Formula C9H12N2O Melting Point N/A
MSDS N/A Flash Point 129.9ºC

 Names

Name 2-methyl-5,6,7,8-tetrahydro-1H-quinazolin-4-one
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.3g/cm3
Boiling Point 291.2ºC at 760 mmHg
Molecular Formula C9H12N2O
Molecular Weight 164.20400
Flash Point 129.9ºC
Exact Mass 164.09500
PSA 45.75000
LogP 0.95710
Vapour Pressure 0.00198mmHg at 25°C
Index of Refraction 1.644

 Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
VA4252000
CHEMICAL NAME :
4(3H)-Quinazolinone, 5,6,7,8-tetrahydro-2-methyl-
CAS REGISTRY NUMBER :
19178-21-3
LAST UPDATED :
198602
DATA ITEMS CITED :
1
MOLECULAR FORMULA :
C9-H12-N2-O
MOLECULAR WEIGHT :
164.23

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
400 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
CHTPBA Chimica Therapeutica. (Paris, France) V.1-8, 1965-73. For publisher information, see EJMCA5. Volume(issue)/page/year: 2,231,1967

 Safety Information

HS Code 2933990090

 Synthetic Route

2-bromocyclohexene-1-carboxylic acid structure

2-bromocyclohex...

CAS#:68965-62-8

Acetimidamide hydrochloride structure

Acetimidamide h...

CAS#:124-42-5

~69%

4(3H)-Quinazolinone, 5,6,7,8-tetrahydro-2-methyl- Structure

4(3H)-Quinazoli...

CAS#:19178-21-3

Literature: Yu, Lin; Wang, Min; Li, Pinhua; Wang, Lei Applied Organometallic Chemistry, 2012 , vol. 26, # 11 p. 576 - 582,7
2-methyl-2,3,5,6,7,8-hexahydroquinazolin-4(1H)-one structure

2-methyl-2,3,5,...

CAS#:105550-62-7

~65%

4(3H)-Quinazolinone, 5,6,7,8-tetrahydro-2-methyl- Structure

4(3H)-Quinazoli...

CAS#:19178-21-3

Literature: Fueloep, Ferenc; Bernath, Gabor Synthesis, 1985 , # 12 p. 1148 - 1149
Acetimidamide hydrochloride structure

Acetimidamide h...

CAS#:124-42-5

Ethyl 2-oxocyclohexanecarboxylate structure

Ethyl 2-oxocycl...

CAS#:1655-07-8

~%

4(3H)-Quinazolinone, 5,6,7,8-tetrahydro-2-methyl- Structure

4(3H)-Quinazoli...

CAS#:19178-21-3

Literature: American Home Products Corporation Patent: US5234936 A1, 1993 ;
acetamidine structure

acetamidine

CAS#:143-37-3

Ethyl 2-oxocyclohexanecarboxylate structure

Ethyl 2-oxocycl...

CAS#:1655-07-8

~%

4(3H)-Quinazolinone, 5,6,7,8-tetrahydro-2-methyl- Structure

4(3H)-Quinazoli...

CAS#:19178-21-3

Literature: Baumgarten et al. Journal of the American Chemical Society, 1958 , vol. 80, p. 6609,6611
7-bromo-7-fluorobicyclo[4.1.0]heptane structure

7-bromo-7-fluor...

CAS#:62360-62-7

~%

4(3H)-Quinazolinone, 5,6,7,8-tetrahydro-2-methyl- Structure

4(3H)-Quinazoli...

CAS#:19178-21-3

Literature: Sedenkova, Kseniya N.; Averina, Elena B.; Grishin, Yuri K.; Kuznetsova, Tamara S.; Zefirov, Nikolay S. Tetrahedron Letters, 2014 , vol. 55, # 2 p. 483 - 485
N/A structure

N/A

CAS#:1404219-84-6

~%

4(3H)-Quinazolinone, 5,6,7,8-tetrahydro-2-methyl- Structure

4(3H)-Quinazoli...

CAS#:19178-21-3

Literature: Sedenkova, Kseniya N.; Averina, Elena B.; Grishin, Yuri K.; Kuznetsova, Tamara S.; Zefirov, Nikolay S. Tetrahedron Letters, 2014 , vol. 55, # 2 p. 483 - 485

 Customs

HS Code 2933990090
Summary 2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

 Synonyms

2-Methyl-5,6,7,8-tetrahydro-3H-quinazolin-4-one
2-Methyl-5,6,7,8-tetrahydroquinazolin-4-ol
2-Methyl-5,6,7,8-tetrahydro-3H-chinazolin-4-on
5,6,7,8-tetrahydro-2-methyl-4-quinazolone
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Chemsrc provides CAS#:19178-21-3 MSDS, density, melting point, boiling point, structure, etc. Its name is 4(3H)-Quinazolinone, 5,6,7,8-tetrahydro-2-methyl->> amp version: 4(3H)-Quinazolinone, 5,6,7,8-tetrahydro-2-methyl-

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