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136733-96-5

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136733-96-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 136733-96-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,6,7,3 and 3 respectively; the second part has 2 digits, 9 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 136733-96:
(8*1)+(7*3)+(6*6)+(5*7)+(4*3)+(3*3)+(2*9)+(1*6)=145
145 % 10 = 5
So 136733-96-5 is a valid CAS Registry Number.

136733-96-5Relevant articles and documents

91. Synthesis, Isolation, and Full Spectroscopic Characterization of Eleven (Z)-Isomers of (3R,3'R)-Zeaxanthin

Englert, Gerhard,Noack, Klaus,Broger, Emil A.,Glinz, Ernst,Vecchi, Max,Zell, Reinhard

, p. 969 - 982 (1991)

Developmental efforts to improve the yield of the chemical synthesis of (3R,3'R)-zeaxanthin resulted in the isolation, partly by chromatography from reaction mixtures, and full spectroscopic characterization by 1H NMR, UV/VIS, and CD spectroscopy of eleven (Z/E)-isomers of zeaxanthin: (7Z)-, (9Z)-, (13Z)-, (15Z)-, (7Z,7'Z)-, (9Z,9'Z)-, (7Z,9Z,7'Z)-, (7Z,11Z,7'Z)-, (9Z,13Z,9'Z)-, (7Z,9Z,7'Z,9'Z)-, and (7Z,9Z,11Z,7'Z,9'Z)-zeaxanthin.Five of these isomers were obtained by specific synthesis, namely the (7Z)-, (7Z,7'Z)-, (9Z,9'Z)-, (7Z,9Z,7'Z)-, and (7Z,9Z,7'Z,9'Z)-isomers.

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