80-18-2 Usage
Description
Methyl benzenesulfonate is used as a raw material for the dye and pharmaceutical industries, used as an alkylating agent in organic synthesis for the production of some synthetic dye. It can also be used for the manufacturing the thin-cation exchanger film.
Preparation
Methyl benzenesulfonate is the effective methylating reagent of synthetic multiple organic intermediate, and industry is at present gone up and mainly adopted Phenylsulfonic acid and methyl alcohol to carry out after the esterification essence to steam, this technology starting material costliness, and reaction time is long, and product yield is low. How to get Methyl benzenesulfonate with high yield, scientists have lots of researcher.
Genotoxicity
Methyl benzenesulfonate is a sulfonate ester which acts as a potential genotoxic impurity in drug substances. Further, it exerts genotoxic effects in bacterial and mammalian cell systems. Incompatible with strong oxidizing agents, strong acids and strong bases.
Reaction
V. M. Nesterov and I. E. Chubova prepared theobromine from 3-methylxanthine, methyl benzenesulfonate, which has been used as the methylating agent. To obtain theobromine, 3-methylxanthine is generally methylated with dimethyl sulfate in an aqueous ethanolic solution of caustic potash. However, if in the reaction the pH exceeds 8.0, the methylation of 3-methylxanthine leads to caffeine, which forms a by-product.
Uses
Methyl benzenesulfonate is a sulfonate ester which acts as a potential genotoxic impurity in drug substances. Further, it exerts genotoxic effects in bacterial and mammalian cell systems.
Check Digit Verification of cas no
The CAS Registry Mumber 80-18-2 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 8 and 0 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 80-18:
(4*8)+(3*0)+(2*1)+(1*8)=42
42 % 10 = 2
So 80-18-2 is a valid CAS Registry Number.
InChI:InChI=1/C7H8O3S/c1-10-11(8,9)7-5-3-2-4-6-7/h2-6H,1H3
80-18-2Relevant articles and documents
Izawa,Kuromiya
, p. 3197 (1975)
Electrochemical synthesis of sulfinic esters from alcohols and thiophenols
He, Yang,Zhang, Jinli,Xu, Liang,Wei, Yu
supporting information, (2020/01/31)
Electrochemical oxidative couplings between S[sbnd]H and O[sbnd]H bonds are achieved herein directly from readily-available alcohols and thiophenols, affording a series of diverse sulfinic esters. This strategy can take advantage of 6 equivalents of alcohol, relative to thiophenol, to achieve moderate to good yields, without the assistance of any metallic catalysts, bases, and additional oxidants.
Generation of VBr? VBi? VO?? defect clusters for 1O2 production for molecular oxygen activation in photocatalysis
Ding, Jie,Dai, Zan,Tian, Fan,Zhou, Bo,Zhao, Bin,Zhao, Huiping,Chen, Zhiquan,Liu, Yunling,Chen, Rong
supporting information, p. 23453 - 23459 (2017/11/30)
Defect engineering on a semiconductor surface can provide coordinatively unsaturated sites for molecular oxygen activation in photocatalysis. In this work, we demonstrated that the vacancy type was key to modulate the molecular oxygen activation process on BiOBr nanosheets. By regulating the reaction time, an oxygen vacancy (VO??), a double atom defect cluster (VBi? VO??) and triple atom clusters (VBi? VO?? VBi? and VBr? VBi? VO??) were accordingly generated on the surface, subsurface and bulk of BiOBr. More importantly, the newly-discovered VBr? VBi? VO?? defect cluster was highly related to the singlet oxygen (1O2) production ability of BiOBr. Meanwhile, the excellent photocatalytic selective oxidation reactions were successfully realized over BiOBr with the VBr? VBi? VO?? defect cluster. In addition, time-dependent defect cluster generation and the associated molecular oxygen activation were discussed.
