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81762-40-5

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81762-40-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81762-40-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,7,6 and 2 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 81762-40:
(7*8)+(6*1)+(5*7)+(4*6)+(3*2)+(2*4)+(1*0)=135
135 % 10 = 5
So 81762-40-5 is a valid CAS Registry Number.

81762-40-5Relevant articles and documents

One-Pot Knoevenagel and [4 + 2] Cycloaddition as a Platform for Calliviminones

Roy, Pritam,Anjum, S. Rehana,Ramachary, Dhevalapally B.

supporting information, p. 2897 - 2901 (2020/04/15)

Bioactive compounds featuring an unusual core of spiro[5.5]undecenes and calliviminones were synthesized in very good yield with good regio- and diastereoselectivities through a one-pot Knoevenagel and [4 + 2] cycloaddition from the readily available aldehydes, cyclic-1,3-diones, dienes, and a catalytic amount of (s)-proline.

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