4275-32-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4275-32-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,2,7 and 5 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 4275-32:
(6*4)+(5*2)+(4*7)+(3*5)+(2*3)+(1*2)=85
85 % 10 = 5
So 4275-32-5 is a valid CAS Registry Number.
InChI:InChI=1/C40H78O4S/c1-3-5-7-9-11-13-15-17-19-21-23-25-27-29-31-33-39(41)43-35-37-45-38-36-44-40(42)34-32-30-28-26-24-22-20-18-16-14-12-10-8-6-4-2/h3-38H2,1-2H3
4275-32-5Relevant articles and documents
Selective synthesis of thiodiglycol dicarboxylic acid esters via p-TsOH/C-catalysed direct esterification
Jiang, Dahong,Huang, Min
, p. 1087 - 1090 (2013/03/28)
The esterification of thiodiglycol and long alkyl-chain carboxylic acids is reported. Reaction of thiodiglycol with carboxylic acid via p-TsOH/C-catalysed direct esterification afforded thiodiglycol dicarboxylic acid esters in good yields and chemoselectivity. The use of immobilized p-TsOH on activated carbon as catalyst is crucial for the transformation. Indian Academy of Sciences.