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121757-32-2

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121757-32-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 121757-32-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,7,5 and 7 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 121757-32:
(8*1)+(7*2)+(6*1)+(5*7)+(4*5)+(3*7)+(2*3)+(1*2)=112
112 % 10 = 2
So 121757-32-2 is a valid CAS Registry Number.

121757-32-2Downstream Products

121757-32-2Relevant articles and documents

Mechanism and Synthetic Applications of the Photochemical Generation and X-H Insertion Reactions of Oxacarbenes

Pirrung, Michael C.,Chang, Virginia K.,DeAmicis, Carl V.

, p. 5824 - 5831 (1989)

A kinetic study of the photochemical ring expansion of cyclobutanones to oxacarbenes has shown that, in the presence of alcohol, the oxacarbene is generated irreversibly.Substrates for the intramolecular versions of the oxacarbene generation-insertion sequence (heteroalkylcyclobutanones) were prepared by an intramolecular -Baeyer-Villiger sequence.These have been used to form 5-, 6-, 7-, and 8-membered nitrogen, oxygen, and sulfur bicyclic ring systems.

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