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1243724-75-5

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1243724-75-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1243724-75-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,4,3,7,2 and 4 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1243724-75:
(9*1)+(8*2)+(7*4)+(6*3)+(5*7)+(4*2)+(3*4)+(2*7)+(1*5)=145
145 % 10 = 5
So 1243724-75-5 is a valid CAS Registry Number.

1243724-75-5Downstream Products

1243724-75-5Relevant articles and documents

Model studies for the stereoselective construction of the BC-ring of armatol F based on Ireland-Claisen rearrangement and relay ring-closing olefin metathesis

Fujiwara, Kenshu,Tanaka, Keita,Katagiri, Yasushi,Kawai, Hidetoshi,Suzuki, Takanori

, p. 4543 - 4546 (2010)

Armatol F, isolated from the red alga Chondria armata as a polyether triterpene, has a fused tricyclic ether moiety (BCD-ring) with an unusual cis ring junction at C18-C19 between the C- and D-rings. En route to the total synthesis of armatol F, the stereoselective construction of the C18 and C19 stereocenters by Ireland-Claisen rearrangement and the formation of the C-ring by relay ring-closing olefin metathesis were established through the synthesis of monocyclic (C-ring) and bicyclic (BC-ring) model compounds.

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