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87712-74-1

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87712-74-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 87712-74-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,7,1 and 2 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 87712-74:
(7*8)+(6*7)+(5*7)+(4*1)+(3*2)+(2*7)+(1*4)=161
161 % 10 = 1
So 87712-74-1 is a valid CAS Registry Number.

87712-74-1Downstream Products

87712-74-1Relevant articles and documents

Novel asymmetric synthesis of atropisomeric 6-aryl pyrazinones via an unusual chirality transfer process

Tulinsky, John,Cheney, B. Vernon,Mizsak, Stephen A.,Watt, William,Han, Fusan,Dolak, Lester A.,Judge, Thomas,Gammill, Ronald B.

, p. 93 - 100 (2007/10/03)

Cyclization of (S,S)-α-[(1-phenylethyl)amino]-α-(2- iodophenyl)acetonitrile with (COCl)2 in toluene or chlorobenzene afforded the atropisomeric pyrazinone (aS,S) 6-(2-α-iodophenyl)-3,5-dichloro-1(1- phenylethyl)-2(1H)-pyrazinone in 57% yield. With smaller ortho substituents (F, Cl, CH3, CF'3, OCH3) on the aromatic ring, mixtures of atropisomers were obtained from the cyclization reaction. All of the individual atropisomers prepared were stable at room temperature. All but the o-fluoro- substituted atropisomers were stable at elevated temperatures. This paper describes a stereoselective synthesis of pyrazinones and suggests a mechanism for formation via an interesting transfer of chirality.

Asymmetric Strecker Synthesis: Isolation of Pure Enantiomers and Mechanistic Implications

Stout, David M.,Black, Lawrence A.,Matier, W. L.

, p. 5369 - 5373 (2007/10/02)

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