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24958-43-8

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24958-43-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 24958-43-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,4,9,5 and 8 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 24958-43:
(7*2)+(6*4)+(5*9)+(4*5)+(3*8)+(2*4)+(1*3)=138
138 % 10 = 8
So 24958-43-8 is a valid CAS Registry Number.

24958-43-8Relevant articles and documents

Syntheses and Preparations of Narwedine and Related Novel Compounds

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Page/Page column 3; 9, (2009/01/20)

The present invention relates to a process for preparing racemic narwedine (which can be can be kinetically resolved) to yield (?)-narwedine and which is the biogenic precursor of (?)-galanthamine) and the use thereof as a starting material for producing (?)-galanthamine. The invention further includes processes for preparing (?)-galanthamine and (?)-galanthamine hydrobromide, as well as related novel compounds.

PROCESS FOR PREPARATION OF BENZAZEPINE

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Page/Page column 21-22, (2008/06/13)

This invention discloses a process for manufacture of galanthamine, which involves a stereoselective reduction step to get the desired isomer of galanthamine. The current embodiment also discusses the method for improving the chiral and chemical purity of galanthamine and galanthamine salts.

Processes for the preparation of derivatives of 4a, 5, 9, 10, 11, 12-hexahydro-6H-benzofuro-[3a, 3, 2-ef][2]benzazepine

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Example 32, (2008/06/13)

The invention relates to processes for the preparation of 4a,5,9,10,11,12-hexahydro-6H-benzofuro[3a,3,2-ef][2]benzazepine, or derivatives thereof. Furthermore, the invention also relates to the compounds formed during the preparation of 4a, 5,9,10,11,12-hexahydro-6H-benzofuro[3a,3,2-ef][2]benzazepine.

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