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289703-22-6

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289703-22-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 289703-22-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,8,9,7,0 and 3 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 289703-22:
(8*2)+(7*8)+(6*9)+(5*7)+(4*0)+(3*3)+(2*2)+(1*2)=176
176 % 10 = 6
So 289703-22-6 is a valid CAS Registry Number.

289703-22-6Relevant articles and documents

PROCESS FOR THE PURIFICATION 10-DEACETYBACCATINE III FROM 10-DEACETYL-2-DEBENZOYL-2-PENTENOYLBACCATINE III

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Page/Page column 2, (2009/12/23)

A process for the preparation of 10-deacetyl-7,10-bis-trichloroacetylbaccatine III with HPLC purity higher than 99% and free from 2-debenzoyl-2-pentenoylbaccatine III by purification of 10-deacetyl-7,10-bis-trichloroacetylbaccatineIII followed by alkaline hydrolysis of the protecting groups in position 7 and 10.

SEMISYNTHESIS PROCESS FOR THE PREPARATION OF 10-DEACETYL-N-DEBENZOYL-PACLITAXEL

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Page/Page column 9; 10, (2008/06/13)

The invention relates to a process for the preparation of 10-deacetyl-N-debenzoyl-paclitaxel, a synthon useful for the preparation of taxanes with antitumour activity, and intermediates for the preparation thereof. The invention also discloses a process f

Process for the preparation of baccatin III derivatives

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Page/Page column 3-4, (2008/06/13)

A process for the preparation of 14 beta-hydroxy-1,4-carbonate-deacetylbaccatin III and intermediates useful for the preparation of novel taxan derivatives with antitumor activity are disclosed.

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