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131387-86-5

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131387-86-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 131387-86-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,3,8 and 7 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 131387-86:
(8*1)+(7*3)+(6*1)+(5*3)+(4*8)+(3*7)+(2*8)+(1*6)=125
125 % 10 = 5
So 131387-86-5 is a valid CAS Registry Number.

131387-86-5Downstream Products

131387-86-5Relevant articles and documents

Regio- and stereoselective synthesis of tetrahydroindolysines, tetrahydropyridin-6-olates, and cyclopropanes from pyridinium ylides and unsaturated nitriles

Shestopalov,Litvinov,Rodinovskaya,Sharanin

, p. 129 - 138 (2007/10/02)

The regio- and stereoselectivity of the reactions of pyridinium ylides with unsaturated nitriles are dependent on the electronic nature of the substituent in position 3 of the pyridine ring. The reaction of 1-carbamoylmethylide-3-cyanopyridinium with aryl

THE CYCLIZATION REACTIONS OF NITRILES. XXXVI. THE REACTIONS OF FUNCTIONAL DERIVATIVES OF CYANOACETIC ACID WITH 1-STYRYLPYRIDINIUM SALTS AND THE STEREOCHEMISTRY OF THE FORMATION OF 4-ARYL-2-OXO-3-(1-PYRIDINO)-5-CYANO-3,4-TRANS-1,2,3,4-TETRAHYDRO-6-PYRIDINO

Shestopalov, A. M.,Sharanin, Yu. A.,Rodinovskaya, L. A.,Litvinov, V. P.

, p. 1356 - 1361 (2007/10/02)

The addition of cyanoacetic acid derivatives to 1-styrylpyridinium salts proceeds stereoselectively with the formation of anti-conformers of pyridinium 1,4-ylids, which also cyclize stereoselectively to give 4-aryl-2-oxo-3-(1-pyridino)-5-cyano-3,4-trans-1

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