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42049-35-4

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42049-35-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 42049-35-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,0,4 and 9 respectively; the second part has 2 digits, 3 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 42049-35:
(7*4)+(6*2)+(5*0)+(4*4)+(3*9)+(2*3)+(1*5)=94
94 % 10 = 4
So 42049-35-4 is a valid CAS Registry Number.

42049-35-4Relevant articles and documents

4-Dodecylbenzenesulfonic acid (DBSA) promoted solvent-free diversity-oriented synthesis of primary carbamates, S-thiocarbamates and ureas

Sardarian, Ali Reza,Inaloo, Iman Dindarloo

, p. 76626 - 76641 (2015/09/22)

A simple and highly efficient solvent-free method for the conversion of alcohols, phenols, thiols and amines to primary carbamates, S-thiocarbamates and ureas in the presence of 4-dodecylbenzenesulfonic acid (DBSA) as a cheap and green Bronsted acid reagent has been described. All products were obtained in good to excellent yields and characterized using FT-IR, 1H- and 13C-NMR, MS and CHNS techniques.

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