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915769-12-9

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915769-12-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 915769-12-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,1,5,7,6 and 9 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 915769-12:
(8*9)+(7*1)+(6*5)+(5*7)+(4*6)+(3*9)+(2*1)+(1*2)=199
199 % 10 = 9
So 915769-12-9 is a valid CAS Registry Number.

915769-12-9Downstream Products

915769-12-9Relevant articles and documents

Stereoselective synthesis of trienoic acids: Synthesis of retinoic acids and analogues

Abarbri, Mohamed,Parrain, Jean-Luc,Duchene, Alain,Thibonnet, Jerome

, p. 2951 - 2970 (2008/02/05)

Stereoselective construction of conjugated trienoic acids was achieved through two successive Stille reactions, the first step consisting of the coupling of (E)-1,2-bis(tributylstannyl)ethene and tributylstannyl (Z)- or (E)-3-iodoalk-2-enoates. Two different routes were used for the second step: (1) cross-coupling of the stannyldienoic acid reagents and vinyl iodides, or (2) cross-coupling of vinylstannane reagents and the tributylstannyl 5-iodopenta-2,4-dienoates generated by iododestannylation of stannyldienes. Vinylstannanes synthesized by stannylmetalation of the Negishi dienyne derived from β- or α-ionone and safranal thus provided access to stereodefined retinoic acids. Some retinoid and yne analogues were also prepared by Sonogashira coupling. Georg Thieme Verlag Stuttgart.

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