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CAS No 116-31-4 , Retinal

  • Name: Retinal
  • Synonyms: Vitamin A aldehyde; Axerophthal; all-E-Retinal;all-trans-Vitamin A aldehyde; Retinaldehyde; all-trans-Retinal; trans-Retinal;2,4,6,8-Nonatetraenal, 3,7-dimethyl-9-(2,6,6-trimethyl-1-cyclohexen-1-yl)-,(all-E)-;Vitamin A1 aldehyde; trans-Vitamin A aldehyde; all-trans-Retinaldehyde;Retinal;(all-E)-3,7-Dimethyl-9-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2,4,6,8-nonatetraenal;Retinal,all-trans- (8CI); Retinene; Retinene 1 (6CI); E-Retinal;
  • CAS Registry Number:
  • Flash Point: 205.4°C
  • Boiling Point: 421.4°Cat760mmHg
  • Density: 0.948g/cm3
  • Refractive index: 1.54
  • Safety Statements: Mutation data reported. When heated to decomposition it emits acrid smoke and irritating vapors.
  • Hazard Symbols: Xn: Harmful;
  • Flash Point: 205.4°C
  • EINECS: 204-135-8
  • Molecular Weight: 284.48
  • InChI: InChI=1/C20H28O/c1-16(8-6-9-17(2)13-15-21)11-12-19-18(3)10-7-14-20(19,4)5/h6,8-9,11-13,15H,7,10,14H2,1-5H3/b9-6+,12-11+,16-8-,17-13+
  • Risk Statements: 22-38
  • Molecular Formula: C20H28 O
  • Molecular Structure:CAS No:116-31-4 Retinal

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116-31-4 Retinal (D6, 96%+)

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116-31-4 trans-Retinal

  • Name;trans-Retinal Synonyms;all trans-Retinal CAS # 116-31-4, trans-Retinal, all trans-Retinal Molecular Formula;C20H28O Molecular Weight;284.44 CAS Registry Number;116-31-4 EINECS;204-135-8
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116-31-4 ALL-TRANS RETINAL

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116-31-4 All-Trans-Retinal

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116-31-4 AXEROPHTHAL

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References of Retinal
Title: Retinal
CAS Registry Number: 116-31-4
Synonyms: Retinaldehyde; retinene1; vitamin A aldehyde; axerophthal
Molecular Formula: C20H28O
Molecular Weight: 284.44
Percent Composition: C 84.45%, H 9.92%, O 5.62%
Literature References: Carotenoid component of the visual pigments. Of the 16 possible stereoisomers, 13 have been synthesized. The 11-cis isomer is the chromophore of the majority of naturally occurring opsins, q.v. Isoln from retinas: G. Wald, J. Gen. Physiol. 19, 351 (1935); recognition as vitamin A aldehyde: R. A. Morton, Nature 153, 69 (1944). Prepd by the oxidation of vitamin A: Ball et al., Biochem. J. 42, 516 (1948); by the oxidation of b-carotene: Wendler et al., J. Am. Chem. Soc. 72, 234 (1950); from b-ionone: Eiter, Truscheit, US 3060229 (1962 to Bayer); Jacobs et al., Rec. Trav. Chim. 84, 1113 (1965). Synthesis in vitro from vitamin A1: G. Wald, R. Hubbard, Proc. Natl. Acad. Sci. USA 36, 92 (1950). Synthesis of 11-cis isomer: J. M. Dieterle, C. D. Robeson, Science 120, 219 (1954). X-ray crystallography of retinals: R. Gilardi et al., Nature 232, 187 (1971); H. Matsumoto et al., J. Am. Chem. Soc. 102, 4259 (1980). Exposure of opsin-bound retinal to light initiates the cis-trans isomerization and resultant dissociation of retinal from the apoprotein. This catalyzes an enzyme cascade which leads to visual excitation: R. Hubbard, A. Kropf, Proc. Natl. Acad. Sci. USA 44, 130 (1958); B. Honig et al., ibid. 76, 2503 (1979). Bioregulation of absorption maxima: B. Honig et al., J. Am. Chem. Soc. 101, 7084 (1979). HPLC determn in biological material: T. Suzuki, M. Makino-Tasaka, Anal. Biochem. 129, 111 (1983). Review of syntheses: V. Balogh-Nair, K. Nakanishi, Methods Enzymol. 88, 496-506 (1982); R. Liu, A. Asata, ibid. 506-516. Role in vision: D. F. O'Brien, Science 218, 961-966 (1982); P. S. Zurer, Chem. Eng. News 61, 24-35 (Nov. 28, 1983). Book: The Retinoids Vol. 1-2, M. B. Sporn et al., Eds. (Academic Press, New York, 1984).
 
Derivative Type: trans-Isomer
Properties: Orange colored crystals from petr ether, mp 61-64°. uv max (hexane): 368 nm (e 48000). Sol in ethanol, chloroform, cyclohexane, petr ether, oils. Practically insol in water.
Melting point: mp 61-64°
Absorption maximum: uv max (hexane): 368 nm (e 48000)
 
Derivative Type: 11-cis-Isomer
Properties: Orange prisms from petr ether, mp 63.5-64.4°. uv max (hexane): 365 nm (e 26360).
Melting point: mp 63.5-64.4°
Absorption maximum: uv max (hexane): 365 nm (e 26360)