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123433-61-4

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123433-61-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 123433-61-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,3,4,3 and 3 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 123433-61:
(8*1)+(7*2)+(6*3)+(5*4)+(4*3)+(3*3)+(2*6)+(1*1)=94
94 % 10 = 4
So 123433-61-4 is a valid CAS Registry Number.

123433-61-4Relevant articles and documents

Studies of the asymmetric [2+2] cycloaddition of silylketenes and aldehydes employing Ti-TADDOL catalysts

Yang, Hong Woon,Romo, Daniel

, p. 2877 - 2880 (2007/10/03)

Ti-TADDOL catalysts provide good reactivity and moderate enantioselectivity in the asymmetric [2+2] cycloaddition of silyl ketenes and aldehydes. The effects of potential bidentate chelation of benzyloxy substituted aldehydes and of the steric size of the ketene silyl group were studied.

SYSTHESIS AND INTRAMOLECULAR RING CLEAVAGE OF 2-OXETANONES

Mead, Keith T.,Samuel, Beverly

, p. 6573 - 6576 (2007/10/02)

Intermolecular 2+2 aldehyde-ketene cycloaddition, followed by Lewis acid induced intramolecular ring opening of the 2-oxetanone product have been used to prepare tetrahydrofuran and tetrahydropyran ring systems.

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