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106551-35-3

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106551-35-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 106551-35-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,6,5,5 and 1 respectively; the second part has 2 digits, 3 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 106551-35:
(8*1)+(7*0)+(6*6)+(5*5)+(4*5)+(3*1)+(2*3)+(1*5)=103
103 % 10 = 3
So 106551-35-3 is a valid CAS Registry Number.

106551-35-3Relevant articles and documents

A New Protocol for Total Synthesis of Natural Product Frutinone A and Its Derivatives

Lei, Kang,Sun, Dong-Wei,Tao, Yuan-Yuan,Xu, Xiao-Hua

, p. 98 - 106 (2016/01/26)

A new protocol for total synthesis of natural product frutinone A was accomplished in three steps by using inexpensive 2′-hydroxyacetophenone as starting material. The key intermediate 3-(2-chlorobenzoyl)-4-hydroxycoumarin was synthesized in one pot through Baker-Venkataraman rearrangement of 2-acetylphenyl 2-chlorobenzoate followed by introduction of methyl chloroformate under basic conditions. Then, base-promoted intramolecular nucleophilic substitution reaction of 3-(2-chlorobenzoyl)-4-hydroxycoumarin provided frutinone A in excellent yield. The synthetic route features good yield, transition metal-free and mild reaction conditions, and high tolerance for functionality, thereby allowing easy substitutions around the frutinone A core.

Synthesis of some 2-(2'-chlorobenzoyl)coumaran-3-ones

Banerji,Kumar,Saha,Mazumdar

, p. 531 - 533 (2007/10/02)

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