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1583281-98-4

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1583281-98-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1583281-98-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,5,8,3,2,8 and 1 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1583281-98:
(9*1)+(8*5)+(7*8)+(6*3)+(5*2)+(4*8)+(3*1)+(2*9)+(1*8)=194
194 % 10 = 4
So 1583281-98-4 is a valid CAS Registry Number.

1583281-98-4Downstream Products

1583281-98-4Relevant articles and documents

Enantioselective total synthesis of pinnaic acid and halichlorine

Xu, Shu,Unabara, Daisuke,Uemura, Daisuke,Arimoto, Hirokazu

supporting information, p. 367 - 375 (2014/01/06)

The enantioselective total synthesis of the bioactive marine natural products pinnaic acid and halichlorine is reported in detail. Our total synthesis features the construction of the five-membered ring and C9 and C13 stereogenic centers through a palladium-catalyzed trimethylenemethane [3+2] cyclization; the installation of the nitrogen atom through a regioselective Beckmann rearrangement of a poorly reactive ketone; the stereoselective cyclization of the spiro ring through a four-step, one-pot hydrogenation- cyclization; and efficient connection of the sterically hindered lower chain through a reduced-pressure cross olefin metathesis reaction. Copyright

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