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723-19-3

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723-19-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 723-19-3 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 7,2 and 3 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 723-19:
(5*7)+(4*2)+(3*3)+(2*1)+(1*9)=63
63 % 10 = 3
So 723-19-3 is a valid CAS Registry Number.

723-19-3Relevant articles and documents

Palladium-catalyzed cyclopropanation of electron-deficient olefins with aryldiazocarbonyl compounds

Chen, Shufeng,Ma, Jian,Wang, Jianbo

scheme or table, p. 6781 - 6783 (2009/04/11)

A concise and efficient protocol for the preparation of cyclopropanes from various aryldiazocarbonyl compounds and electron-deficient olefins catalyzed by Pd(OAc)2 is reported.

Stereochemistry of 1,3-Eliminative Cyclopropanation

Nishiyama, Kazuyoshi,Inouye, Yuzo

, p. 1027 - 1034 (2007/10/02)

The estereochemistry of 1,3-eliminative cyclopropanation was established in the NaH-catalyzed condensation system involving carbanionic reagents with chlorine and phosphate as the leaving group.It was proved by means of product analysis that the steric co

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