Toxicological evaluation of the flavour ingredient 4-amino-5-(3-(isopropylamino)-2,2-dimethyl-3-oxopropoxy)-2-methylquinoline-3-carboxylic acid

A toxicological evaluation of 4-amino-5-(3-(isopropylamino)-2,2-dimethyl-3-oxopropoxy)-2-methylquinoline-3-carboxylic acid(S9632; CAS 1359963-68-0), a flavour with modifying properties,was completed for the purpose of assessing its safety for use in food and beverage applications. No Phase I biotran...

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Main Authors: Amy J. Arthur, Donald S. Karanewsky, Hanghui Liu, Bert Chi, Stacy Markison
Format: Article
Language:English
Published: Elsevier 2015-01-01
Series:Toxicology Reports
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2214750015300536
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author Amy J. Arthur
Donald S. Karanewsky
Hanghui Liu
Bert Chi
Stacy Markison
author_facet Amy J. Arthur
Donald S. Karanewsky
Hanghui Liu
Bert Chi
Stacy Markison
author_sort Amy J. Arthur
collection DOAJ
description A toxicological evaluation of 4-amino-5-(3-(isopropylamino)-2,2-dimethyl-3-oxopropoxy)-2-methylquinoline-3-carboxylic acid(S9632; CAS 1359963-68-0), a flavour with modifying properties,was completed for the purpose of assessing its safety for use in food and beverage applications. No Phase I biotransformations of S9632 were observed in rat or human microsomes in vitro, and in rat pharmacokinetic studies, the compound was poorly orally bioavailable and rapidly eliminated. S9632 was not found to be mutagenic or clastogenic in vitro, and did not induce micronuclei or indicate interactions with the mitotic spindle in an in vivo mouse micronucleus assay at oral doses up to 2000 mg/kg. In subchronic oral toxicity studies in rats, the NOEL was 100 mg/kg/day (highest dose tested) for S9632 when administered as a food ad-mix for 90 consecutive days. Furthermore, S9632 demonstrated a lack of maternal toxicity, as well as adverse effects on fetal morphology at the highest dose tested, providing a NOEL of 1000 mg/kg/day for both maternal toxicity and embryo/fetal development when administered orally during gestation to pregnant rats.
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spelling doaj.art-de7f947cf602457a920213136f2b4a942022-12-22T02:08:00ZengElsevierToxicology Reports2214-75002015-01-012C1255126410.1016/j.toxrep.2015.08.012Toxicological evaluation of the flavour ingredient 4-amino-5-(3-(isopropylamino)-2,2-dimethyl-3-oxopropoxy)-2-methylquinoline-3-carboxylic acidAmy J. ArthurDonald S. KaranewskyHanghui LiuBert ChiStacy MarkisonA toxicological evaluation of 4-amino-5-(3-(isopropylamino)-2,2-dimethyl-3-oxopropoxy)-2-methylquinoline-3-carboxylic acid(S9632; CAS 1359963-68-0), a flavour with modifying properties,was completed for the purpose of assessing its safety for use in food and beverage applications. No Phase I biotransformations of S9632 were observed in rat or human microsomes in vitro, and in rat pharmacokinetic studies, the compound was poorly orally bioavailable and rapidly eliminated. S9632 was not found to be mutagenic or clastogenic in vitro, and did not induce micronuclei or indicate interactions with the mitotic spindle in an in vivo mouse micronucleus assay at oral doses up to 2000 mg/kg. In subchronic oral toxicity studies in rats, the NOEL was 100 mg/kg/day (highest dose tested) for S9632 when administered as a food ad-mix for 90 consecutive days. Furthermore, S9632 demonstrated a lack of maternal toxicity, as well as adverse effects on fetal morphology at the highest dose tested, providing a NOEL of 1000 mg/kg/day for both maternal toxicity and embryo/fetal development when administered orally during gestation to pregnant rats.http://www.sciencedirect.com/science/article/pii/S2214750015300536Flavours with modifying propertiesS9632FEMA GRASSubchronic toxicological evaluationGenetic toxicological evaluation
spellingShingle Amy J. Arthur
Donald S. Karanewsky
Hanghui Liu
Bert Chi
Stacy Markison
Toxicological evaluation of the flavour ingredient 4-amino-5-(3-(isopropylamino)-2,2-dimethyl-3-oxopropoxy)-2-methylquinoline-3-carboxylic acid
Toxicology Reports
Flavours with modifying properties
S9632
FEMA GRAS
Subchronic toxicological evaluation
Genetic toxicological evaluation
title Toxicological evaluation of the flavour ingredient 4-amino-5-(3-(isopropylamino)-2,2-dimethyl-3-oxopropoxy)-2-methylquinoline-3-carboxylic acid
title_full Toxicological evaluation of the flavour ingredient 4-amino-5-(3-(isopropylamino)-2,2-dimethyl-3-oxopropoxy)-2-methylquinoline-3-carboxylic acid
title_fullStr Toxicological evaluation of the flavour ingredient 4-amino-5-(3-(isopropylamino)-2,2-dimethyl-3-oxopropoxy)-2-methylquinoline-3-carboxylic acid
title_full_unstemmed Toxicological evaluation of the flavour ingredient 4-amino-5-(3-(isopropylamino)-2,2-dimethyl-3-oxopropoxy)-2-methylquinoline-3-carboxylic acid
title_short Toxicological evaluation of the flavour ingredient 4-amino-5-(3-(isopropylamino)-2,2-dimethyl-3-oxopropoxy)-2-methylquinoline-3-carboxylic acid
title_sort toxicological evaluation of the flavour ingredient 4 amino 5 3 isopropylamino 2 2 dimethyl 3 oxopropoxy 2 methylquinoline 3 carboxylic acid
topic Flavours with modifying properties
S9632
FEMA GRAS
Subchronic toxicological evaluation
Genetic toxicological evaluation
url http://www.sciencedirect.com/science/article/pii/S2214750015300536
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