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28987-86-2

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28987-86-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 28987-86-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,9,8 and 7 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 28987-86:
(7*2)+(6*8)+(5*9)+(4*8)+(3*7)+(2*8)+(1*6)=182
182 % 10 = 2
So 28987-86-2 is a valid CAS Registry Number.

28987-86-2Relevant articles and documents

Substituted pyrrole synthesis from nitrodienes

Karimi, Sasan,Ma, Shuai,Liu, Yanan,Ramig, Keith,Greer, Edyta M.,Kwon, Kitae,Berkowitz, William F.,Subramaniam, Gopal

, p. 2223 - 2227 (2017/05/16)

Though the Cadogan-Sundberg approach has been employed to synthesize a variety of indole and carbazole derivatives from nitroarenes, surprisingly, very little is reported for making pyrroles using the same approach from non-arene nitrodienes. Herein, we report a general method to synthesize substituted pyrroles, in one step with modest yields, from nitrodienes using triphenylphosphine in the presence of an Mo catalyst, bis(acetylaceto)dioxomolybdenum (VI). To shed light on the mechanism of this reaction, we performed DFT calculations using uB3LYP/6-31+G(d) basis set and observed that the reaction favors a path through a nitrene intermediate.

A Simple Unusual One-Step Conversion of Aromatic Aldehydes into Nitriles

Karmarkar, Sanjay N.,Kelkar, Shriniwas L.,Wadia, Murzban S.

, p. 510 - 512 (2007/10/02)

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