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140423-61-6

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140423-61-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 140423-61-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,0,4,2 and 3 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 140423-61:
(8*1)+(7*4)+(6*0)+(5*4)+(4*2)+(3*3)+(2*6)+(1*1)=86
86 % 10 = 6
So 140423-61-6 is a valid CAS Registry Number.

140423-61-6Relevant articles and documents

A regioselective lithiation of ortho-cresols using the bis(dimethylamino)phosphoryl group as a directing group: General synthesis of 2,3-dihydrobenzo[b]furans including naturally occurring neolignans

Watanabe,Kawanishi,Akiyoshi,Furukawa

, p. 3123 - 3131 (2007/10/02)

A general synthetic method was developed for 2-aryl-2,3-dihydrobenzo[b]furans via regioselective lithiation of ortho-tolyl tetramethylphosphorodiamidates followed by addition of aromatic aldehydes as a key step. ortho-Tolyl tetramethylphosphorodiamidates

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