Benzyl acetate
Benzyl acetate is used as a flavoring agent in foods, as a fragrance in soaps and perfumes, as a solvent for cellulose acetate and nitrate, and as a component of printing inks and varnish removers.[14C]Benzyl acetate is a potential radiotracer for the measurement of glial metabolism in the rat brain.
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Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to
24 months(2-8C).
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20C. Generally, these will be useable for up to two weeks. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.
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The packaging of the product may have turned upside down during transportation, resulting in the natural compounds adhering to the neck or cap of the vial. take the vial out of its packaging and gently shake to let the compounds fall to the bottom of the vial. for liquid products, centrifuge at 200-500 RPM to gather the liquid at the bottom of the vial. try to avoid loss or contamination during handling.
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Food Chem Toxicol,1994 Nov;32(11):1061-5.
Percutaneous absorption of benzyl acetate through rat skin in vitro. 3. A comparison with human skin.[Pubmed:
7959461]
METHODS AND RESULTS:
The comparative absorption of the fragrance and industrial compound, Benzyl acetate, has been studied in rat and human skin, using shaved, full-thickness dorsal skin of male Fischer 344 rats and full-thickness human skin obtained from patients undergoing surgical resection. Penetration of the compound through rat and human skin was evaluated in vitro in flow-through diffusion cells following topical application of neat [methylene-14C] Benzyl acetate (33.1 mg/cm2) to the epidermal surface and occlusion with a teflon cap, 2.9 cm above the skin surface. The absorption of Benzyl acetate across rat skin was rapid and extensive, reaching 34.3 +/- 3.9% of the applied dose (11.3 +/- 1.3 mg/cm2) (mean +/- SD, n = 12) at 24 hr and 55.8 +/- 5.0% of the applied dose (18.5 +/- 1.7 mg/cm2) at 72 hr. The penetration of Benzyl acetate was significantly (P < 0.05) less rapid and extensive through human skin, reaching 5.5 +/- 0.1% of the applied dose (1.8 +/- 0.0 mg/cm2) (mean +/- SD, n = 12) at 24 hr and 17.8 +/- 3.3% of the applied dose (5.9 +/- 1.1 mg/cm2) at 72 hr. The rate of penetration of Benzyl acetate was greater through rat skin than through human tissue at all time points studied up to 72 hr. The maximum rate of skin penetration was 0.6 +/- 0.1 mg/cm2/hr and 0.1 +/- 0.0 mg/cm2/hr through rat and human skin, respectively.
CONCLUSIONS:
These data indicate that systemic exposure to Benzyl acetate may occur after skin contact in humans. They also support the evidence from the literature that human skin is generally less permeable to xenobiotics than rat skin.
Nuclear Medicine & Biology, 2007,34(8):939-944.
[14C]Benzyl acetate is a potential radiotracer for the measurement of glial metabolism in the rat brain.[Reference:
WebLink]
METHODS AND RESULTS:
In order to develop a suitable radiotracer for the measurement of glial metabolism, we synthesized four different types of ester derivatives of [14C]acetate, namely, [14C]phenyl acetate, [14C]para-nitrophenyl acetate, [14C]2,4-dinitrophenyl acetate and [14C]Benzyl acetate ([14C]BA), and evaluated their potencies in rats. Among the derivatives, the highest brain uptake at 30 s postinjection was observed for [14C]BA, which was more than 23 times higher than that of [14C]acetate itself. A long-term retention of [14C]BA radioactivity in the brain was observed, whereas rapid clearance of radioactivity was seen in the heart. [14C]BA was rapidly hydrolyzed in the intact rat brain, and less than 5% of radiolabeled parent was observed 1 min after the injection. Radiochemical analysis using thin-layer chromatography revealed that [14C]BA was rapidly converted to [14C]glutamine and [14C]glutamate in the cortex within 10 min after injection. Furthermore, the uptake of [14C]BA was significantly decreased following microinjection of fluorocitrate, a selective glial toxin.
CONCLUSIONS:
These results strongly suggest that [14C]BA may be a useful radiotracer for the measurement of glial metabolism in the intact rat brain.
Natl Toxicol Program Tech Rep Ser, 1993, 431:1-285.
NTP Toxicology and Carcinogenesis Studies of Benzyl Acetate (CAS No. 140-11-4) in F344/N Rats and B6C3F1 Mice Feed Studies).[Pubmed:
12616300 ]
Benzyl acetate is used as a flavoring agent in foods, as a fragrance in soaps and perfumes, as a solvent for cellulose acetate and nitrate, and as a component of printing inks and varnish removers.
METHODS AND RESULTS:
The NTP previously studied the toxicology and carcinogenicity of this chemical in F344/N rats and B6C3F1 mice using the gavage route of administration and corn oil as a vehicle. Benzyl acetate increased the incidences of pancreatic acinar cell adenomas in male rats and the incidences of hepatocellular adenomas and forestomach neoplasms in male and female mice. Because of the confounding effect of corn oil on the incidences of pancreatic neoplasms and because of controversy over the use of the gavage route of administration, the NTP decided to restudy Benzyl acetate using the dosed feed route of administration.
CONCLUSIONS:
In these repeat studies, male and female F344/N rats and B6C3F1 mice received Benzyl acetate (at least 98% pure) in feed for 13 weeks and 2 years. Genetic toxicology studies were conducted in Salmonella typhimurium nunnery, cultured Chinese hamster ovary cells, LS178Y .
