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389091-74-1

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389091-74-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 389091-74-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,8,9,0,9 and 1 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 389091-74:
(8*3)+(7*8)+(6*9)+(5*0)+(4*9)+(3*1)+(2*7)+(1*4)=191
191 % 10 = 1
So 389091-74-1 is a valid CAS Registry Number.

389091-74-1Downstream Products

389091-74-1Relevant 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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