N-Acetylimidoquinone

Modify Date: 2024-01-02 12:11:33

N-Acetylimidoquinone Structure
N-Acetylimidoquinone structure
Common Name N-Acetylimidoquinone
CAS Number 50700-49-7 Molecular Weight 149.147
Density 1.1±0.1 g/cm3 Boiling Point 255.6±43.0 °C at 760 mmHg
Molecular Formula C8H7NO2 Melting Point 74-75ºC
MSDS Chinese USA Flash Point 101.6±33.5 °C

 Use of N-Acetylimidoquinone


NAPQI is the toxic metabolite of Paracetamol. NAPQI is also an inhibitor of enzymes in the vitamin K cycle. NAPQI is rapidly detoxified by glutathione (GSH), but in situations of GSH deficiency, excess NAPQI reacts with cysteine residues in proteins, causing cell death and toxicity in the liver[1][2].

 Names

Name N-acetyl-1,4-benzoquinone imine
Synonym More Synonyms

 N-Acetylimidoquinone Biological Activity

Description NAPQI is the toxic metabolite of Paracetamol. NAPQI is also an inhibitor of enzymes in the vitamin K cycle. NAPQI is rapidly detoxified by glutathione (GSH), but in situations of GSH deficiency, excess NAPQI reacts with cysteine residues in proteins, causing cell death and toxicity in the liver[1][2].
Related Catalog
Target

Human Endogenous Metabolite

References

[1]. Jiang D, et al. Organ-Specific Screening for Protein Damage Using Magnetic Bead Bioreactors and LC-MS/MS. Anal Chem. 2020 Apr 7;92(7):5337-5345.

[2]. Thijssen HH, et al. Paracetamol (acetaminophen) warfarin interaction: NAPQI, the toxic metabolite of paracetamol, is an inhibitor of enzymes in the vitamin K cycle. Thromb Haemost. 2004 Oct;92(4):797-802.

 Chemical & Physical Properties

Density 1.1±0.1 g/cm3
Boiling Point 255.6±43.0 °C at 760 mmHg
Melting Point 74-75ºC
Molecular Formula C8H7NO2
Molecular Weight 149.147
Flash Point 101.6±33.5 °C
Exact Mass 149.047684
PSA 46.50000
LogP 0.38
Vapour Pressure 0.0±0.5 mmHg at 25°C
Index of Refraction 1.545
Storage condition -20°C

 Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
AC6960000
CHEMICAL NAME :
Acetamide, N-(4-oxo-2,5-cyclohexadien-1-ylidene)-
CAS REGISTRY NUMBER :
50700-49-7
LAST UPDATED :
199612
DATA ITEMS CITED :
1
MOLECULAR FORMULA :
C8-H7-N-O2
MOLECULAR WEIGHT :
149.16
WISWESSER LINE NOTATION :
L6V DYJ DUNV1

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
20 mg/kg
TOXIC EFFECTS :
Blood - change in clotting factors
REFERENCE :
JMCMAR Journal of Medicinal Chemistry. (American Chemical Soc., Distribution Office Dept. 223, POB POB 57136, West End Stn., Washington, DC 20037) V.6- 1963- Volume(issue)/page/year: 25,885,1982

 Safety Information

Personal Protective Equipment Eyeshields;Gloves;type N95 (US);type P1 (EN143) respirator filter
RIDADR NONH for all modes of transport
WGK Germany 3
RTECS AC6960000
HS Code 2924299090

 Customs

HS Code 2924299090
Summary 2924299090. other cyclic amides (including cyclic carbamates) and their derivatives; salts thereof. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

 Articles28

More Articles
Targeting mitochondria with methylene blue protects mice against acetaminophen-induced liver injury.

Hepatology 61(1) , 326-36, (2015)

Acetaminophen (APAP) overdose is a frequent cause of drug-induced liver injury and the most frequent cause of acute liver failure in the Western world. Previous studies with mouse models have revealed...

Monitoring paracetamol metabolism after single and repeated administration in pediatric patients with neoplastic diseases.

Int. J. Clin. Pharmacol. Ther. 45(9) , 496-503, (2007)

Paracetamol (PCM) is frequently used in pediatric patients with neoplastic disease. It is metabolized mainly by conjugation, but at therapeutic concentrations, a small fraction of the drug undergoes o...

Use of a systems model of drug-induced liver injury (DILIsym®) to elucidate the mechanistic differences between acetaminophen and its less-toxic isomer, AMAP, in mice

Toxicol. Lett. 226(2) , 163-72, (2014)

Acetaminophen (APAP) has been used as a probe drug to investigate drug-induced liver injury (DILI). In mice, 3′-hydroxyacetanilide (AMAP), a less-toxic isomer of APAP, has also been studied as a negat...

 Synonyms

Acetimidoquinone
N-Acetyl-1,4-benzoquinone imine
N-Acetyl-p-benzoquinonimine
p-benzoquinonimine, N-acetyl-
N-(4-Oxo-2,5-cyclohexadien-1-ylidene)acetamide
N-Acetyl-P-benzoquinoneimine
N-Acetyl-4-benzoquinone Imine
N-acetyl-4-benzoquinoneimine
Acetamide, N-(4-oxo-2,5-cyclohexadien-1-ylidene)-
N-(4-Oxocyclohexa-2,5-dien-1-ylidene)acetamide
NAPQI
N-(4-Oxo-1-cyclohexa-2,5-dienylidene)acetamide,N-Acetyl-p-benzo-quinoneimine,NAPQI