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186900-91-4

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186900-91-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 186900-91-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,6,9,0 and 0 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 186900-91:
(8*1)+(7*8)+(6*6)+(5*9)+(4*0)+(3*0)+(2*9)+(1*1)=164
164 % 10 = 4
So 186900-91-4 is a valid CAS Registry Number.

186900-91-4Relevant articles and documents

Synthesis of Hydroxylated Pyrrolizidines Related to Alexine using Cycloaddition Reactions of Functionalized Cyclic Nitrones

Hall, Adrian,Meldrum, Kevin P.,Therond, Patrick R.,Wightman, Richard H.

, p. 123 - 125 (2007/10/03)

Cycloaddition reactions of the functionalized Δ1-pyrroline-N-oxides 10 and 19 have been used to prepare the hydroxylated pyrrolizidines 6 and 7 respectively, which are related to the natural products alexine and australine.

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