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57705-17-6

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57705-17-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 57705-17-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,7,0 and 5 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 57705-17:
(7*5)+(6*7)+(5*7)+(4*0)+(3*5)+(2*1)+(1*7)=136
136 % 10 = 6
So 57705-17-6 is a valid CAS Registry Number.

57705-17-6Relevant articles and documents

One-pot synthesis of 3,5-disubstituted and polysubstituted phenols from acyclic precursors

Qian, Jinlong,Yi, Wenbin,Huang, Xin,Miao, Yongbo,Zhang, Junkai,Cai, Chun,Zhang, Wei

supporting information, p. 1090 - 1093 (2015/03/14)

A new strategy for the synthesis of 3,5-disubstituted phenols is established through one-pot Robinson annulation of α,β-unsaturated ketones with α-fluoro-β-ketoesters followed by in situ dehydrofluorination and tautomerization. This method has been extended to the synthesis of polysubstituted phenols and applied in the preparation of biologically active compounds.

Synthesis of dibenzo[b,d]pyran-6-ones based on a '[3+3] cyclization-Suzuki cross-coupling' strategy

Nguyen, Van Thi Hong,Langer, Peter

, p. 1013 - 1015 (2007/10/03)

Functionalized dibenzo[b,d]pyran-6-ones were prepared by sequential '[3+3] cyclization-Suzuki cross-coupling' reactions.

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