1,3(2H,4H)-Isoquinolinedione,2-methyl-

Modify Date: 2025-08-27 09:19:18

1,3(2H,4H)-Isoquinolinedione,2-methyl- Structure
1,3(2H,4H)-Isoquinolinedione,2-methyl- structure
 Common Name 1,3(2H,4H)-Isoquinolinedione,2-methyl-
CAS Number 4494-53-5 Molecular Weight 175.18400
Density 1.248g/cm3 Boiling Point 355.6ºC at 760 mmHg
Molecular Formula C10H9NO2 Melting Point 121-122 °C
MSDS N/A Flash Point 173.4ºC

 Names

Name 2-methyl-4H-isoquinoline-1,3-dione
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.248g/cm3
Boiling Point 355.6ºC at 760 mmHg
Melting Point 121-122 °C
Molecular Formula C10H9NO2
Molecular Weight 175.18400
Flash Point 173.4ºC
Exact Mass 175.06300
PSA 37.38000
LogP 0.77920
Index of Refraction 1.584
Storage condition 2-8°C

 Safety Information

HS Code 2933499090

 Synthetic Route

N/A structure

N/A

CAS#:501130-44-5

~57%

1,3(2H,4H)-Isoquinolinedione,2-methyl- Structure

1,3(2H,4H)-Isoq...

CAS#:4494-53-5

Literature: Quiclet-Sire, Beatrice; Zard, Samir Z. Chemical Communications, 2002 , # 20 p. 2306 - 2307
HOMOPHTHALIC ANHYDRIDE structure

HOMOPHTHALIC AN...

CAS#:703-59-3

~%

1,3(2H,4H)-Isoquinolinedione,2-methyl- Structure

1,3(2H,4H)-Isoq...

CAS#:4494-53-5

Literature: American Home Products Patent: US4927831 A1, 1990 ; US 4927831 A
HOMOPHTHALIC ANHYDRIDE structure

HOMOPHTHALIC AN...

CAS#:703-59-3

methylamine structure

methylamine

CAS#:74-89-5

~80%

1,3(2H,4H)-Isoquinolinedione,2-methyl- Structure

1,3(2H,4H)-Isoq...

CAS#:4494-53-5

Literature: Ling, Ke-Qing; Ye, Jia-Hai; Chen, Xian-Yang; Ma, De-Jian; Xu, Jian-Hua Tetrahedron, 1999 , vol. 55, # 30 p. 9185 - 9204
Homophthalic acid structure

Homophthalic acid

CAS#:89-51-0

methylamine structure

methylamine

CAS#:74-89-5

~74%

1,3(2H,4H)-Isoquinolinedione,2-methyl- Structure

1,3(2H,4H)-Isoq...

CAS#:4494-53-5

Literature: Wolfbeis, Otto S.; Trummer, Iris; Knierzinger, Andreas Liebigs Annalen der Chemie, 1981 , # 5 p. 811 - 818
Benzenecarboximidic acid, N-methyl- (9CI) structure

Benzenecarboxim...

CAS#:88070-48-8

~%

1,3(2H,4H)-Isoquinolinedione,2-methyl- Structure

1,3(2H,4H)-Isoq...

CAS#:4494-53-5

Literature: Quiclet-Sire, Beatrice; Zard, Samir Z. Chemical Communications, 2002 , # 20 p. 2306 - 2307
4-acetyl-4H-isochromene-1,3-dione structure

4-acetyl-4H-iso...

CAS#:2848-28-4

~%

1,3(2H,4H)-Isoquinolinedione,2-methyl- Structure

1,3(2H,4H)-Isoq...

CAS#:4494-53-5

Literature: Datta, D.; Tirodkar, R. B.; Usgaonkar, R. N. Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry, 1980 , vol. 19, # 8 p. 641 - 643
1,1-bis(2-methyl-1,3-dioxo-1,2,3,4-tetrahydroisoquinolin-1-yl)acetone structure

1,1-bis(2-methy...

CAS#:99389-01-2

Malononitrile structure

Malononitrile

CAS#:109-77-3

~%

1,3(2H,4H)-Isoquinolinedione,2-methyl- Structure

1,3(2H,4H)-Isoq...

CAS#:4494-53-5

N/A structure

N/A

CAS#:99389-03-4

Detail
Literature: Fujimaki; Nagase; Yamaguchi; et al. Chemical and Pharmaceutical Bulletin, 1985 , vol. 33, # 7 p. 2663 - 2670
methyl 3-methyl-1-oxoisochromene-4-carboxylate structure

methyl 3-methyl...

CAS#:25113-15-9

methylamine structure

methylamine

CAS#:74-89-5

~%

1,3(2H,4H)-Isoquinolinedione,2-methyl- Structure

1,3(2H,4H)-Isoq...

CAS#:4494-53-5

2-(N-methylcarbamoyl)-α-(N-methylcarbamoyl) benzyl methylketone structure

2-(N-methylcarb...

CAS#:76746-98-0

Literature: Datta, D.; Tirodkar, R. B.; Usgaonkar, R. N. Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry, 1980 , vol. 19, # 8 p. 641 - 643
4-carboethoxy-3-methylisocoumarin structure

4-carboethoxy-3...

CAS#:76746-89-9

methylamine structure

methylamine

CAS#:74-89-5

~%

1,3(2H,4H)-Isoquinolinedione,2-methyl- Structure

1,3(2H,4H)-Isoq...

CAS#:4494-53-5

2-(N-methylcarbamoyl)-α-(N-methylcarbamoyl) benzyl methylketone structure

2-(N-methylcarb...

CAS#:76746-98-0

Literature: Datta, D.; Tirodkar, R. B.; Usgaonkar, R. N. Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry, 1980 , vol. 19, # 8 p. 641 - 643

 Customs

HS Code 2933499090
Summary 2933499090. other compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

 Synonyms

4H)-dioxo-2-methylisoquinoline
N-methylhomophthalimide
2-methyl-1,2,3,4-tetrahydroisoquinoline-1,3-dione
2-Methyl-4H-isochinolin-1,3-dion
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