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1234908-38-3

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1234908-38-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1234908-38-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,3,4,9,0 and 8 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1234908-38:
(9*1)+(8*2)+(7*3)+(6*4)+(5*9)+(4*0)+(3*8)+(2*3)+(1*8)=153
153 % 10 = 3
So 1234908-38-3 is a valid CAS Registry Number.

1234908-38-3Relevant articles and documents

Divergent Synthesis of α-Fluorinated Carbonyl and Carboxyl Derivatives by Double Electrophilic Activation of Amides

Dubart, Amaury,Evano, Gwilherm

, p. 8931 - 8936 (2021/11/17)

A straightforward and divergent entry to α-fluorinated carbonyl and carboxyl derivatives is reported. Upon activation of amides with triflic anhydride and a 2-halo-pyridine and subsequent trapping of the resulting keteniminium ions with nucleophiles followed by a second electrophilic activation with NFSI and final hydrolysis, a range of amides can be transformed to α-fluorinated ketones, esters, and amides under mild conditions. Moreover, this reaction can be performed to yield enantioenriched products with a traceless chiral auxiliary.

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