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78429-21-7

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78429-21-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 78429-21-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,8,4,2 and 9 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 78429-21:
(7*7)+(6*8)+(5*4)+(4*2)+(3*9)+(2*2)+(1*1)=157
157 % 10 = 7
So 78429-21-7 is a valid CAS Registry Number.

78429-21-7Downstream Products

78429-21-7Relevant articles and documents

From Alkyl Halides to Ketones: Nickel-Catalyzed Reductive Carbonylation Utilizing Ethyl Chloroformate as the Carbonyl Source

Shi, Renyi,Hu, Xile

supporting information, p. 7454 - 7458 (2019/04/30)

Ketones are an important class of molecules in synthetic and medicinal chemistry. Rapid and modular synthesis of ketones remains in high demand. Described here is a nickel-catalyzed three-component reductive carbonylation method for the synthesis of dialkyl ketones. A wide range of both symmetric and asymmetric dialkyl ketones can be accessed from alkyl halides and a safe CO source, ethyl chloroformate. The approach offers complementary substrate scope to existing carbonylation methods while avoiding the use of either toxic CO or metal carbonyl reagents.

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