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20428-67-5

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20428-67-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 20428-67-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,4,2 and 8 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 20428-67:
(7*2)+(6*0)+(5*4)+(4*2)+(3*8)+(2*6)+(1*7)=85
85 % 10 = 5
So 20428-67-5 is a valid CAS Registry Number.

20428-67-5Relevant articles and documents

Cerium(III) amide enolate. Addition to aldehydes and ketones

Shang,Liu

, p. 2485 - 2489 (1994)

The cerium(III) amide enolates, prepared in situ from the corresponding lithium enolates and anhydrous CeCl3, were found to undergo facile additions to ketones and aldehydes. Yields of the adducts are superior to those obtained using the lithiu

Synthesis of N,N-dimethyl α-aryl and α,α-diarylacetamides by radical nucleophilic substitution reactions

Palacios, S. M.,Asis, S. E.,Rossi, R. A.

, p. 111 - 116 (2007/10/02)

A family of N,N-dimethyl, α-aryl and α,α-diaryl acetamides was synthesized by reaction of aryl halides with N,N-dimethyl acetamide enolate ions in liquid ammonia.The reactions followed the SRN1 mechanism for nucleophilic substitution.They were initiated by light (350 nm), when the aryl halides or aryl halides bearing electron-donating groups were the substrate, and by potassium metal dissolved in liquid ammonia when the substituents on the aryl halides were electron-withdrawing groups. Key Words: SRN1 / nucleophilic substitution / synthesis / acetamide compounds / herbicides

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