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220448-44-2

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220448-44-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 220448-44-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,0,4,4 and 8 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 220448-44:
(8*2)+(7*2)+(6*0)+(5*4)+(4*4)+(3*8)+(2*4)+(1*4)=102
102 % 10 = 2
So 220448-44-2 is a valid CAS Registry Number.

220448-44-2Relevant articles and documents

Extending the versatility of the Hemetsberger-Knittel indole synthesis through microwave and flow chemistry

Ranasinghe, Nadeesha,Jones, Graham B.

, p. 1740 - 1742 (2013/04/10)

Microwave, flow and combination methodologies have been applied to the synthesis of a number of substituted indoles. Based on the Hemetsberger-Knittel (HK) process, modifications allow formation of products rapidly and in high yield. Adapting the methodology allows formation of 2-unsubstituted indoles and derivatives, and a route to analogs of the antitumor agent PLX-4032 is demonstrated. The utility of the HK substrates is further demonstrated through bioconjugation and subsequent ring closure and via Huisgen type [3+2] cycloaddition chemistry, allowing formation of peptide adducts which can be subsequently labeled with fluorine tags.

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