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31335-70-3

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31335-70-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 31335-70-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,3,3 and 5 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 31335-70:
(7*3)+(6*1)+(5*3)+(4*3)+(3*5)+(2*7)+(1*0)=83
83 % 10 = 3
So 31335-70-3 is a valid CAS Registry Number.

31335-70-3Relevant articles and documents

Sulfonic acid supported on hydroxyapatite-encapsulated-γ-Fe2O3 nanocrystallites as a magnetically Br?nsted acid for N-formylation of amines

Ma'mani, Leila,Sheykhan, Mehdi,Heydari, Akbar,Faraji, Mohammad,Yamini, Yadollah

experimental part, p. 64 - 69 (2010/07/05)

Treatment of aqueous formic acid (85%) with structurally diverse amines in the presence of a catalytic amount of sulfonic acid supported on hydroxyapatite-encapsulated-γ-Fe2O3 [HAp@-γ-Fe2O3] (0.9 mol.%) as a heterogeneous, reusable and highly efficient catalyst gave the corresponding formamides in good to excellent yields at room temperature. The magnetically catalytic system was recovered by-passing time consuming filtration operation by using an external magnet device. In addition to facility, this methodology, it also enhances product purity and promises economic as well as environmental benefits.

Facile and highly efficient N-formylation of amines using a catalytic amount of iodine under solvent-free conditions

Kim, Joong-Gon,Jang, Doo Ok

experimental part, p. 2093 - 2096 (2010/10/03)

We developed a simple, practical, and catalytic method for the N-formylation of a wide variety of amines in the presence of molecular iodine as a catalyst under solvent-free conditions. This reaction is applicable to the chemoselective N-formylation of amino groups and -amino acid esters without epimerization.

2,2,2-trifluoroethyl formate: a versatile and selective reagent for the formylation of alcohols, amines, and N-hydroxylamines.

Hill, David R,Hsiao, Chi-Nung,Kurukulasuriya, Ravi,Wittenberger, Steven J

, p. 111 - 113 (2007/10/03)

[reaction: see text] Treatment of a variety of alcohols, amines, and N-hydroxylamines with 2,2,2-trifluoroethyl formate gave the corresponding formylated adducts in high yields.

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