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71629-13-5

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71629-13-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 71629-13-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,6,2 and 9 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 71629-13:
(7*7)+(6*1)+(5*6)+(4*2)+(3*9)+(2*1)+(1*3)=125
125 % 10 = 5
So 71629-13-5 is a valid CAS Registry Number.

71629-13-5Relevant articles and documents

2. Synthese von (-)-(R)-4-Hydroxy-β-ionon und (-)-(5R,6S)-5-Hydroxy-4,5-dihydro-α-ionon aus (-)-(S)-α-Ionon

Haag, von Andreas,Eschenmoser, Walter,Eugster, Conrad Hans

, p. 10 - 15 (1980)

The absolute configuration of the chiral 4-hydroxy-β-ionones and 5-hydroxy-4,5-dihydro-α-ionones has been determined by chemical connection with (-)-(S)-α-ionone i.e. by stereoselective epoxidation of the latter, followed by base catalyzed opening of the epoxide as well as by its hydride reduction.

Facile lipase catalysed syntheses of (S)-(+)-4-hydroxy-β-ionone and (S)-(+)-4-hydroxy-β-damascone: Chiral flavorants and synthons

More, Gauri P.,Bhat, Sujata V.

, p. 4148 - 4149 (2013/07/26)

Enantioselective syntheses of (S)-(+)-4-hydroxy-β-ionone and (S)-(+)-4-hydroxy-β-damascone have been achieved through pig pancreatic lipase catalysed trans-esterification. These molecules find utility as constituent in fruit-type fragrance and flavor form

Synthesis of (+)-(4S)- and (-)-(4R)11 Z-4-hydroxyretinals and determination of the absolute stereochemistry of a visual pigment chromophore in the bioluminescent squid, Watasenia scintillans

Katsuta, Yuko,Yoshihara, Kazuo,Nakanishi, Koji,Ito, Masayoshi

, p. 905 - 908 (2007/10/02)

Synthesis of (+)-(4S)- and (-)-(4R)-11Z-4-hydroxyretinals (4-OH-RALs) 1a and 1b was accomplished from (4S)- and (4R)-4-hydroxy-β-ionones, respectively, to determine the absolute configuration of a visual pigment chromophore in Watasenia scintillans. The C

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