1-METHYLQUINOXALINE-2,3(1H,4H)-DIONE

Modify Date: 2026-07-04 23:39:05

1-METHYLQUINOXALINE-2,3(1H,4H)-DIONE Structure
1-METHYLQUINOXALINE-2,3(1H,4H)-DIONE structure
Common Name 1-METHYLQUINOXALINE-2,3(1H,4H)-DIONE
CAS Number 20934-51-4 Molecular Weight 176.17200
Density 1.292g/cm3 Boiling Point N/A
Molecular Formula C9H8N2O2 Melting Point N/A
MSDS N/A Flash Point N/A

Summary: 4-Methyl-1H-quinoxaline-2,3-dione, also known as 1-METHYLQUINOXALINE-2,3(1H,4H)-DIONE, is a chemical with CAS number 20934-51-4. Its molecular formula is C9H8N2O2 and the molecular weight is 176.17200. For research-use only, not for medical or clinical usage.


 Names

This table lists Chinese names, IUPAC names and various aliases of this chemical substance.

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

 Chemical & Physical Properties

This table shows physicochemical parameters including melting point, boiling point, density, solubility and optical rotation. Missing data is marked as N/A.

Density 1.292g/cm3
Molecular Formula C9H8N2O2
Molecular Weight 176.17200
Exact Mass 176.05900
PSA 54.86000
LogP 0.22680
Index of Refraction 1.585
InChIKey ZJDLDFIDSAFPFG-UHFFFAOYSA-N
SMILES Cn1c(=O)c(=O)[nH]c2ccccc21
Storage condition 2-8°C

 Safety Information

This table covers safety warnings, protective measures, incompatible substances and disposal guidelines for this compound.

HS Code 2933990090

 Customs

This table shows customs‑related data including HS‑code, tariff and regulatory conditions for import and export.

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

This table collects all English aliases, systematic names and CAS‑related synonyms of the compound.

1-Methyl-1,4-dihydro-2,3-quinoxalinedione
1-Methyl-1,4-dihydro-chinoxalin-2,3-dion
1,2,3,4-tetrahydro-1-methyl-2,3-dioxoquinoxaline
1,2,3,4-tetrahydro-3-keto-1-methylquinoxaline
N-Methyl-1,4-dihydro-2,3-quinoxalinedione
1-Methylquinoxaline-2,3-dione
1-methyl-1,4-dihydroquinoxaline-2,3-dione

 1-METHYLQUINOXALINE-2,3(1H,4H)-DIONE | FAQ

This section contains frequently‑asked‑questions about this compound, including basic parameters, properties, storage conditions and corresponding answers.

Q: What English synonyms does 4-methyl-1H-quinoxaline-2,3-dione have?
A: English synonyms of 4-methyl-1H-quinoxaline-2,3-dione: 1-Methyl-1,4-dihydro-2,3-quinoxalinedione, 1-Methyl-1,4-dihydro-chinoxalin-2,3-dion, 1,2,3,4-tetrahydro-1-methyl-2,3-dioxoquinoxaline, 1,2,3,4-tetrahydro-3-keto-1-methylquinoxaline, N-Methyl-1,4-dihydro-2,3-quinoxalinedione, 1-Methylquinoxaline-2,3-dione, 1-methyl-1,4-dihydroquinoxaline-2,3-dione.
Q: What is the molecular formula of 4-methyl-1H-quinoxaline-2,3-dione?
A: Molecular formula of 4-methyl-1H-quinoxaline-2,3-dione is C9H8N2O2.
Q: What are the storage conditions for 4-methyl-1H-quinoxaline-2,3-dione?
A: Storage conditions for 4-methyl-1H-quinoxaline-2,3-dione: 2-8°C.
Q: What is the InChIKey of 4-methyl-1H-quinoxaline-2,3-dione?
A: InChIKey of 4-methyl-1H-quinoxaline-2,3-dione is ZJDLDFIDSAFPFG-UHFFFAOYSA-N.
Q: What is the polar surface area (PSA) of 4-methyl-1H-quinoxaline-2,3-dione?
A: Polar surface area (PSA) of 4-methyl-1H-quinoxaline-2,3-dione is 54.86000.
Q: What are the downstream products of 4-methyl-1H-quinoxaline-2,3-dione?
A: Related downstream products(CAS) of 4-methyl-1H-quinoxaline-2,3-dione: 23719-78-0;31595-64-9;2213-63-0;80708-30-1;80708-31-2;90042-29-8;55687-06-4;58175-07-8.
Q: What is the molecular weight of 4-methyl-1H-quinoxaline-2,3-dione?
A: Molecular weight of 4-methyl-1H-quinoxaline-2,3-dione is 176.17200.
Q: What is the SMILES notation of 4-methyl-1H-quinoxaline-2,3-dione?
A: SMILES notation of 4-methyl-1H-quinoxaline-2,3-dione is Cn1c(=O)c(=O)[nH]c2ccccc21.
Q: What is the LogP of 4-methyl-1H-quinoxaline-2,3-dione?
A: LogP of 4-methyl-1H-quinoxaline-2,3-dione is 0.22680.
Q: What is the CAS number of 4-methyl-1H-quinoxaline-2,3-dione?
A: CAS number of 4-methyl-1H-quinoxaline-2,3-dione is 20934-51-4.

 1-METHYLQUINOXALINE-2,3(1H,4H)-DIONEfactory

This table lists manufacturers and suppliers of this compound, including vendor names and product supply reference information.

Shanghai Nianxing Industrial Co., Ltd
Dayang Chem (Hangzhou) Co., Ltd.
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