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944262-97-9

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944262-97-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 944262-97-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,4,4,2,6 and 2 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 944262-97:
(8*9)+(7*4)+(6*4)+(5*2)+(4*6)+(3*2)+(2*9)+(1*7)=189
189 % 10 = 9
So 944262-97-9 is a valid CAS Registry Number.

944262-97-9Relevant articles and documents

Indole diterpene synthetic studies. Total synthesis of (+)-nodulisporic acid F and construction of the heptacyclic cores of (+)-nodulisporic acids A and B and (-)-nodulisporic acid D

Smith III, Amos B.,Davulcu, Akin H.,Young, Shin Cho,Ohmoto, Kazuyuki,Kuerti, Laszlo,Ishiyama, Haruaki

, p. 4596 - 4610 (2008/02/05)

(Chemical Equation Presented) A first-generation strategy for construction of (+)-nodulisporic acids A (1) and B (2) is described. The strategy entails union of the eastern and western hemisphere subtargets via the indole synthesis protocol developed in our laboratory. Subsequent elaboration of rings E and F, however, revealed the considerable acid instability of the C(24) hydroxyl, thereby preventing further advancement. Nonetheless, preparation of the heptacyclic core of (+)-nodulisporic acids A and B, the total synthesis of (+)-nodulisporic acid F, the simplest member of the nodulisporic acid family, and elaboration of the heptacyclic core of (-)-nodulisporic acid D were achieved.

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