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33202-91-4

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33202-91-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 33202-91-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,2,0 and 2 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 33202-91:
(7*3)+(6*3)+(5*2)+(4*0)+(3*2)+(2*9)+(1*1)=74
74 % 10 = 4
So 33202-91-4 is a valid CAS Registry Number.

33202-91-4Downstream Products

33202-91-4Relevant articles and documents

Cu(OAc)2-mediated reaction of C60 with ureas for the preparation of fulleroimidazolidinones

Yang, Hai-Tao,Tan, Yi-Chen,Yang, Yang,Sun, Xiao-Qiang,Miao, Chun-Bao

, p. 1157 - 1163 (2016/02/18)

The Cu(OAc)2-mediated intermolecular diamination reaction of C60 with ureas allows the concise and efficient preparation of fulleroimidazolidinones involving the cleavage of two N-H bonds and formation of two C-N bonds. Both dialkylated and diarylated fulleroimidazolidinones can be synthesized using this method.

Organic Phoshorus Compounds. XVI. On the Chemistry of the Isocyanatophosphoric Acid Diethyl Ester

Moll, Rainer,Jentzsch, Renate,Fischer, Gerhard W.

, p. 439 - 443 (2007/10/02)

A one-pot procedure for preparing ureidophosphoric acid dialkyl esters 2 from POCl3, urea, and alcohols via ureidophosphoric acid dichloride 1 was worked out. 2 (R=Et) was used as starting material for isocyanatophosphoric acid diethyl ester (4, R=Et), th

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