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564-88-5

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564-88-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 564-88-5 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 5,6 and 4 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 564-88:
(5*5)+(4*6)+(3*4)+(2*8)+(1*8)=85
85 % 10 = 5
So 564-88-5 is a valid CAS Registry Number.

564-88-5Relevant articles and documents

Selective isomerization of retinal upon two-photon excitation

Sashima, Tokutake,Hashimoto, Hideki,Koshihara, Shin-ya

, p. 380 - 385 (2007/10/03)

The products of photo-isomerization when excited directly up to the two-photon-allowed 1Ag- excited state of alltrans and five cis isomers of retinal were determined. The composition of the isomers at the photo-stationary state was drastically changed as compared to one-photon excitation. The production of the 13-cis isomer was selectively increased, and the production of the dicis isomers was observed in the case of a direct excitation upon the 31Ag- state, although they were hard to be produced by one-photon excitation in n-hexane solution. These results clearly evidenced that there exist isomerization pathways via two-photon-allowed excited states.

Photoisomerization of polyenes. 30. Quantum chain processes in photoisomerization of the all-trans, 7-cis, and 11-cis isomers of retinal

Ganapathy,Liu

, p. 3459 - 3464 (2007/10/02)

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A new prenylation method using the lithium enolate of prenal. Reaction with polyunsaturated aldehydes. A short access to retinal

Duhamel, Lucette,Guillemont, Jerome,Poirier, Jean-Marie,Chabardes, Pierre

, p. 4499 - 4500 (2007/10/02)

The enolate of prenal 1 prepared from the corresponding silyl enol ether 2 or enol acetate 3 led to a γ-regiospecific reaction with polyunsaturated aldehydes 4 yielding dihydropyrans 5 leading after hydrolysis to polyenals 7. This process allows the introduction of the isoprenyl skeleton. A synthesis of retinal, from β-ionylidenacetaldehyde is reported.

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