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581069-45-6

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581069-45-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 581069-45-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,8,1,0,6 and 9 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 581069-45:
(8*5)+(7*8)+(6*1)+(5*0)+(4*6)+(3*9)+(2*4)+(1*5)=166
166 % 10 = 6
So 581069-45-6 is a valid CAS Registry Number.

581069-45-6Relevant articles and documents

Efficient enantioselective total synthesis of (-)-epipodophyllotoxin

Engelhardt, Ulrike,Sarkar, Arunkanti,Linker, Torsten

, p. 2487 - 2489 (2007/10/03)

In only twelve steps the total synthesis of (-)-epipodophyllotoxin (2) has been completed starting from commercially available piperonal (1). The first stereo-center was formed under auxilary control, while the following epoxidation and radical cyclization proceeded with outstanding diastereoselectivity, which enabled the target molecule to be isolated in an overall yield of 30% and with 97% ee.

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