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54234-72-9

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54234-72-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 54234-72-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,2,3 and 4 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 54234-72:
(7*5)+(6*4)+(5*2)+(4*3)+(3*4)+(2*7)+(1*2)=109
109 % 10 = 9
So 54234-72-9 is a valid CAS Registry Number.

54234-72-9Upstream product

54234-72-9Downstream Products

54234-72-9Relevant articles and documents

Improved synthesis of 3-nitrosalicylic acid

Hummel, Michael,Laus, Gerhard,Nerdinger, Sven,Schottenberger, Herwig

, p. 3353 - 3357 (2010)

Nitration of salicylic acid using 2-propyl nitrate/sulfuric acid/tetrabutylammonium hydrogensulfate/dichloromethane/water yielded a mixture of 3-nitro and 5-nitrosalicylic acids in the ratio 56:44. Pure potassium 3-nitrosalicylate was crystallized and converted to 3-nitrosalicylic acid in 30% overall yield. Copyright

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