19803-43-1 Usage
General Description
Ammonium methyl sulphate is a chemical compound with the formula (CH3)2NH2S04. It is a white crystalline solid that is soluble in water. Ammonium methyl sulphate is used as a reagent in organic chemical reactions, as well as in the production of pharmaceuticals and agrochemicals. It is also used as a catalyst in various chemical processes. Ammonium methyl sulphate is considered to be a moderately hazardous substance, and proper precautions should be taken when handling and storing it. Overall, it is an important compound in the chemical industry with a variety of applications.
Check Digit Verification of cas no
The CAS Registry Mumber 19803-43-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,8,0 and 3 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 19803-43:
(7*1)+(6*9)+(5*8)+(4*0)+(3*3)+(2*4)+(1*3)=121
121 % 10 = 1
So 19803-43-1 is a valid CAS Registry Number.
InChI:InChI=1/CH4O4S.H3N/c1-5-6(2,3)4;/h1H3,(H,2,3,4);1H3
19803-43-1Relevant articles and documents
Oxidation of Aromatic Aldehydes to Esters: A Sulfate Radical Redox System
Guo, Ya-Fei,Mahmood, Sajid,Xu, Bao-Hua,Yao, Xiao-Qian,He, Hong-Yan,Zhang, Suo-Jiang
, p. 1591 - 1599 (2017)
A mild oxidative esterification of various aromatic aldehydes by sulfate radical redox system was presented. In the reaction pathway exploration, the transiency of MeOSO3- was disclosed, which was generated from esterification between the in situ generated HSO4- and MeOH, a rate-limiting step in the process. More importantly, the selectivity-controlling step was represented by the subsequent nucleophilic displacement between MeOSO3- and aldehydes. The ionic oxidant 1a ((NH4)2S2O8) with more N-H numbers in the cation, as compared with 1c ((n-Bu4N)2S2O8) and 1d ((PyH)2S2O8), has better performance in the oxidative esterification of aldehydes.
