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29910-92-7

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29910-92-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 29910-92-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,9,9,1 and 0 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 29910-92:
(7*2)+(6*9)+(5*9)+(4*1)+(3*0)+(2*9)+(1*2)=137
137 % 10 = 7
So 29910-92-7 is a valid CAS Registry Number.

29910-92-7Relevant articles and documents

Functionalized 2'-carboxamidodeoxybenzoins by ring opening of 3-aryl-1H-isochromen-1-ones with secondary amines

Shablykina, Olga V.,Moskvina, Viktoria S.,Ishchenko, Valentina V.,Valter, Eugenia B.,Khilya, Volodymir P.

, (2016)

[Figure not available: see fulltext.] An efficient approach based on pyrone ring opening in 3-arylisocoumarins in the presence of cyclic secondary amines was developed in order to prepare amides of deoxybenzoin-2'-carboxylic acids, diverse functionalized

Triflic acid mediated sequential cyclization of ortho-alkynylarylesters with ammonium acetate

Domaradzki, Maciej E.,Liu, Xiaochen,Ong, Jiye,Yu, Gyeongah,Zhang, Gan,Simantov, Ariel,Perl, Eliyahu,Chen, Yu

, (2020/08/03)

A triflic acid (TfOH) mediated sequential cyclization of ortho-alkynylarylesters and ammonium acetate (NH4OAc) was reported. The reaction took place via a Br?nsted acid-mediated intramolecular cyclization of ortho-alkynylarylesters followed by an ammonium acetate participated substitution reaction, forming isoquinolin-1-ones as the major products. Different from most of the known synthetic methods of isoquinolin-1-ones, no metal catalyst was required in the reported reaction. The regioisomers – isoindolin-1-ones were obtained together with isoquinolin-1-ones in a few cases. The intermediate compounds – isochromen-1-ones and isobenzofuran-1-ones were also isolated. The interconversion experiments showed that the regioisomers formed during the Br?nsted acid induced intramolecular cyclization of ortho-alkynylarylesters. A natural product – ruprechstyril was prepared in a moderate yield employing the new method.

Fluorination-triggered tandem cyclization of styrene-type carboxylic acids to access 3-aryl isocoumarin derivatives under microwave irradiation

Yuan, Jinwei,Zeng, Fanlin,Mai, Wenpeng,Yang, Liangru,Xiao, Yongmei,Mao, Pu,Wei, Donghui

, p. 5038 - 5046 (2019/06/03)

A practical and straightforward synthetic route through a fluorination-triggered tandem cyclization of styrene-type carboxylic acids was developed to construct a variety of 4-fluoro-3-aryl-3,4-dihydroisocoumarins and 3-arylisocoumarins under microwave irr

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