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480441-20-1

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480441-20-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 480441-20-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,8,0,4,4 and 1 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 480441-20:
(8*4)+(7*8)+(6*0)+(5*4)+(4*4)+(3*1)+(2*2)+(1*0)=131
131 % 10 = 1
So 480441-20-1 is a valid CAS Registry Number.

480441-20-1Relevant articles and documents

A chirally catalysed ene reaction in a novel formal total synthesis of the antitumor agent laulimalide

Pitts, Michael R,Mulzer, Johann

, p. 8471 - 8473 (2002)

A short highly efficient synthesis of the C3-C16 fragment 2 of laulimalide 1 is described. Fragment 2 was a key intermediate in a previous approach and thus constitutes a formal total synthesis with improved efficiency. The key steps are an Evans' alkylation, a Brown allylation and a chirally catalysed stereocontrolled ene-reaction.

Synthesis of the C(7)-C(20) fragment of spirotoamides A, B and C

Rossini, Allan F.C.,Dias, Luiz C.

, p. 1567 - 1578 (2019/10/01)

This work describes the preparation of the C(7)-C(20) fragment of spirotoamides A to C in a very elegant fashion, achievement very high levels of stereocontrol. The synthesis has been accomplished by a sequence involving 14 steps (0.36percent overall yiel

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