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2628-88-8

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2628-88-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 2628-88-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,6,2 and 8 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 2628-88:
(6*2)+(5*6)+(4*2)+(3*8)+(2*8)+(1*8)=98
98 % 10 = 8
So 2628-88-8 is a valid CAS Registry Number.

2628-88-8Relevant articles and documents

Direct and Selective Synthesis of Adipic and Other Dicarboxylic Acids by Palladium-Catalyzed Carbonylation of Allylic Alcohols

Beller, Matthias,Ge, Yao,Huang, Weiheng,Jackstell, Ralf,Liu, Jiawang,Neumann, Helfried,Yang, Ji

supporting information, p. 20394 - 20398 (2020/09/21)

A general and direct synthesis of dicarboxylic acids including industrially important adipic acid by palladium-catalyzed dicarbonylation of allylic alcohol is reported. Specifically, the combination of PdCl2 and a bisphosphine ligand (HeMaRaphos) promotes two different carbonylation reactions with high activity and excellent selectivity.

Synthesis of annelated analogues of 6-benzyl-1-(ethoxymethyl)-5-isopropyluracil (MKC-442) using 1,3-oxazine-2,4(3H)-diones as key intermediates

Larsen, Janus S.,Christensen, Lene,Ludvig, Gitte,Jorgensen, Per T.,Pedersen, Erik B.,Nielsen, Claus

, p. 3035 - 3038 (2007/10/03)

Condensation of ethyl 3-phenyl-2-oxocyclopentanecarboxylate 5 with 2-(S-methylthio)isourea followed by hydrolysis with HC1 gave 6,7-dihydro-7-phenylcyclopenta[e][1,3]oxazine-2,4(3H,5H)-dione (10a). 7,8-Dihydro-8-phenyl-6H-cyclohexa[e][1,3]oxazine-2,4(3H,5H)-dione (10b) was synthesised by reacting 2-phenylcyclohexanone (9b) with N-(chlorocarbonyl) isocyanate. The oxazines 10a,b were reacted with ammonia to obtain the corresponding uracil derivatives 12a,b which after silylation were alkylated with diethoxymethane using trimethylsilyl triflate (TMS-triflate) as the catalyst or alkylated with chloromethyl ethyl ether to give annelated MKC-442 analogues 2,3 which are locked in a conformation close to the one of MKC-442. In spite of this, only moderate activities were found against HIV-1 for the annelated analogues of MKC-442. The Royal Society of Chemistry 2000.

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