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(2R,2'E,5'S,6'R,7'E)-tert-butyl 2-[(5'-hydroxy-6'-methyl-8'-phenylocta-2',7'-dienoyl)amino]-3-(4-methoxyphenyl)propionate is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

281191-02-4

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281191-02-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 281191-02-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,8,1,1,9 and 1 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 281191-02:
(8*2)+(7*8)+(6*1)+(5*1)+(4*9)+(3*1)+(2*0)+(1*2)=124
124 % 10 = 4
So 281191-02-4 is a valid CAS Registry Number.

281191-02-4Relevant articles and documents

Asymmetric syntheses of potent antitumor macrolides cryptophycin B and arenastatin A

Ghosh, Arun K.,Bischoff

, p. 2131 - 2141 (2007/10/03)

Efficient and highly stereoselective syntheses of cryptophycin B and arenastatin A, potent cytotoxic agents, are described. An ester-derived titanium enolate mediated syn-aldol reaction was employed to generate the stereocenters C-5 and C-6. The route is convergent and provides a convenient access to the synthesis of structural variants of cryptophycins as well as members of its family. ( Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004).

A convergent synthesis of (+)-cryptophycin B, a potent antitumor macrolide from Nostoc sp. cyanobacteria.

Ghosh,Bischoff

, p. 1573 - 1575 (2007/10/03)

[structure--see text] An efficient and highly stereoselective synthesis of cryptophycin B (2), a potent cytotoxic agent, is described. The ester-derived titanium-enolate-mediated syn-aldol reaction was employed to generate the stereocenters C(5) and C(6). The route is convergent and provides a convenient access to the synthesis of structural variants of cryptophycin B as well as members of its family.

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