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42019-94-3

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42019-94-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 42019-94-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,0,1 and 9 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 42019-94:
(7*4)+(6*2)+(5*0)+(4*1)+(3*9)+(2*9)+(1*4)=93
93 % 10 = 3
So 42019-94-3 is a valid CAS Registry Number.

42019-94-3Downstream Products

42019-94-3Relevant articles and documents

Synthesis and properties of benzylidene derivatives of terpenoid ketones

Chuiko,Vinarskaya,Izotova,Tychinskaya

, p. 196 - 199 (2002)

Optically active benzylidene derivatives of camphor and menthone were obtained in preparative yields by condensation of the ketones with aromatic aldehydes in DMSO in the presence of t-BuOLi. The synthesized α,β-unsaturated ketones show high specific rotation and thus are suitable to bedoping component to liquid-crystalline compositions.

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