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64634-46-4

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64634-46-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 64634-46-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,4,6,3 and 4 respectively; the second part has 2 digits, 4 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 64634-46:
(7*6)+(6*4)+(5*6)+(4*3)+(3*4)+(2*4)+(1*6)=134
134 % 10 = 4
So 64634-46-4 is a valid CAS Registry Number.

64634-46-4Downstream Products

64634-46-4Relevant articles and documents

Transition-Metal-Free Synthesis of Polyfunctional Triarylmethanes and 1,1-Diarylalkanes by Sequential Cross-Coupling of Benzal Diacetates with Organozinc Reagents

Wei, Baosheng,Ren, Qianyi,Bein, Thomas,Knochel, Paul

, p. 10409 - 10414 (2021/03/26)

A variety of functionalized triarylmethane and 1,1-diarylalkane derivatives were prepared via a transition-metal-free, one-pot and two-step procedure, involving the reaction of various benzal diacetates with organozinc reagents. A sequential cross-coupling is enabled by changing the solvent from THF to toluene, and a two-step SN1-type mechanism was proposed and evidenced by experimental studies. The synthetic utility of the method is further demonstrated by the synthesis of several biologically relevant molecules, such as an anti-tuberculosis agent, an anti-breast cancer agent, a precursor of a sphingosine-1-phosphate (S1P) receptor modulator, and a FLAP inhibitor.

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