3-Benzylidene camphor

Benzylidene camphor CAS 15087-24-8 EINECS/ELINCS 239-139-9 Synonyms 1,7,7-Trimethyl-3-(phenylmethylene) bicycio [2.2.1] heptan-2-one... 

Unisoft475. See Quaternium-27 Unisoft SAC. See Stearalkonium chloride Unisoi S-22. See 3-Benzylidene camphor Unisorb 20. See Polysorbate 20 Unisorb 21. See Polysorbate 21 Unisorb 40. See Polysorbate 40 Unisorb 60. See Polysorbate 60 Unisorb 61. See Polysorbate 61 Unisorb 65. See Polysorbate 65 Unisorb 80. See Polysorbate 80 Unisorb 80L. See PEG-80 sorbitan laurate Unisorb 85. See Polysorbate 85 Unispar 40, Unispar 50. See Sodium silicoaluminate... 

Acetamide Acetanisole Ascorbyl palmitate Barium cadmium laurate Behenic acid 3-Benzylidene camphor t-Butyl ami noethyl methacrylate Cadmium diamyidithiocarbamate Caprylic/capric/stearic triglyceride Carbodiimide... 

Benzophenone-9 Benzophenone-10 Benzophenone-11 Benzophenone-12 3-Benzylidene camphor Benzylidene camphor sulfonic acid Benzylsalicylate Bornelone Bumetrizole Camphor benzalkonium methosulfate... 

These sunscreen ingredients include octyl-dimethyl-PABA (UVB), 2-ethylhexyl-p-meth-oxycinnamate (UVB),octocrylene (UVA/UVB), octyl salicylate (UVB), benzophenones (UVB/ UVA), and methyl anthranilate (UVA). Avoben-zone or Parsol 1789 and mexoryl, a benzylidene camphor, block UVA. Mexoryl is the most efficient of the UVA organic sunscreens [10]. Many sunscreen formulations combine ingredients to maximize photoprotection. 

Janjua NR, Mogensen B, Andersson AM. Systemic absorption of the sunscreens benzo-phenone-3, octyl-methoxycinnamate, and 3-(4-methyl-benzylidene) camphor after whole-body topical application and reproductive hormone levels in humans. J Invest Dermatol 2004 123 57-61. 

In 1993, Ternes [370] for the first time identified and quantified the sunscreen agents 3-(4 -methyl benzyliden)-camphor [MEG] and p-dimethylamino benzoicisooctylester [DABI] in fish from five different lakes of Germany. The contamination of water and fish of some lakes in Germany was further investigated in the years 1991 and 1993 by Nagtegaal et al. [371]. These scientists... 

Beck I, Deflandre A, Lange G, Arnaud R, Lemaire J. Study of the photochemical behavior of sunscreens-benzylidene camphor and derivatives. Int J Cosmet Sci 1981 3 139-152. 

Suncare products Sunscreens Benzophenone-3, Homosalate, 4-methyl-benzylidene camphor (4-MBC), Octyl-methoxycinnamate, Oc ty 1-dim e thyl-PAB A, Octocrylene Hormone-disrupting chemicals known to affect the fertility of animals in the wild. Also found in moisturizers, lipsticks, and foundations. 

Benzylidene-epicamphor, according to its n.m.r. spectrum exists in the form (295), rather than the geometrical isomer. Catalytic reduction of benzylidene-camphor (296) leads to the two possible benzylcamphors (297) and (298). Reduction of these with sodium borohydride leads to epimerization before reduction unless 2% of water is added to the diglyme used as solvent. ... 

Oxobenz (de) anthracene. See Benzanthrone P-Oxobenzenepropanoic acid ethyl ester. See Ethyl benzoyl acetate 2-Oxo-1,2-benzopyran. SeeCoumarin 2-Oxobornane. See Camphor a-(2-Oxoborn-3-ylidene) toluene-4 sulfonic acid. See Benzylidene camphor sulfonic acid... 

Poly (acrylamide-sodium acrylate). See Acrylamide/sodium acrylate copolymer Polyacrylamidomethyl benzylidene camphor CAS 113783-61-2... 

Propenamide-2-propenoic acid polymer. See Acrylic acid/acrylamide copolymer 2-Propenamide, N-[[4-[(4,7,7-trimethyl-3-oxobicyclo [2.2.1] hept-2-ylidene) methyl] phenyl] methyl]-, homopolymer. See Polyacrylamidomethyl benzylidene camphor Propenamidopropyltrimethylammonium chloride, polymer with propenoic acid, butenoic acid, and/or alkyl propenoates. See Acrylamidopropyltrimonium chloride/acrylates copolymer... 

Isopropylbenzyl salicylate Isopropyl dibenzoylmethane Isopropyl methoxycinnamate 4-Methylbenzylidene camphor Octocrylene Octrizole Octyl dimethyl PABA Octyl methoxycinnamate Octyl triazone Phenylbenzimidazole sulfonic acid Polyacrylamidomethyl benzylidene camphor Potassium methoxycinnamate Potassium phenylbenzimidazole sulfonate Red petrolatum Sodium phenylbenzimidazole sulfonate TEA-phenylbenzimidazole sulfonate... 

Methyl benzylidene camphor Neo Heliopan MBC Parsol 5000 Uvinul MBC 95 36936-60-4 Emery 5794 PEG-3 triethanolamine 37064-20-3... 

Benzylidene camphor sulfonic acid C17H22CIN3 Basic yellow 2 C17H22N2... 

A number of highly conjugated organic compounds are ingredients of sunscreens. One of the more widely used is 4-methyl-benzylidene camphor (4-MBC), whose structure is shown below. This compound is effective in absorbing so-called UV-B radiation (with wavelengths between 280 and 320 nm. 

The authors reported the chiral separation of proline and thereonine amino acid up to 20 and 6g, respectively, in a single run. Micropreparative resolution of lecucine was presented. The resolution was discussed with respect to the degree of sorbent saturation with copper(II), elution rate, eluent concentration, temperature, and column loading condition [16]. Weinstein [74] reported the micropreparative separation of alkylated amino acids on a Chiral ProCu column. In another article, a preparative chiral resolution of 3-methylene-7-benzylidene-bicyclo[3.3.1]nonane was achieved on 7.5% silver(I)-d-camphor- 10-sulfonate CSP [75]. Later, Shieh et al. [71] used L-proline-loaded silica gel for the chiral resolution of (ft,5 )-phcnylcthanolaminc as the Schiff base of 2-hydroxy-4-methoxyacetophenone. Gris et al. [76] presented the preparative separations of amino acids on Chirosolve L-proline and Chirosolve L-pipecolic acid CSPs. 

Fig. 7 Chromatographic separation of volatile aromatic compounds on LCSP. A, A -diphenyl-[4-(2,3,4-m -(2-methox-yethoxy)-ethoxy)benzylidene) imine]-piperidine in the nematic state. 1) a-pinene 2) P-pinene 3) eucalyptol 4) limonene 5) d-camphor 6) linalool 7) linalyl acetate 8) citronellal 9) terpineol 10) menthol 11) bomeol 12) nerol 13) citronellol 14) geraniol 15) estragole 16) thymol 17) carvacrol 18) c/5-isoeugenol 19) anethole and 20) rran -isoeugenol.

In the case of 3-(2 -thienylidene) camphor 243 chlorosulfonation, under similar conditions, gave the 5 -sulfonyl chloride (sulfonation adjacent to the electron-donating heterosulfur atom). 4-Benzylidenepinocamphorone 244 reacted with excess chlorosulfonic acid (six equivalents) at room temperature (1 week), followed by treatment with thionyl chloride-DMF catalyst, to give the /7-sulfonyl chloride, characterized by formation of sulfonamide deiivatives. 2-Thienylideneacetone 245, together with the benzylidene derivatives of ethyl methyl ketone 246 and diethyl ketone 247, by treatment with excess chlorosul-... 

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