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139553-40-5

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139553-40-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 139553-40-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,5,5 and 3 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 139553-40:
(8*1)+(7*3)+(6*9)+(5*5)+(4*5)+(3*3)+(2*4)+(1*0)=145
145 % 10 = 5
So 139553-40-5 is a valid CAS Registry Number.

139553-40-5Downstream Products

139553-40-5Relevant articles and documents

EFFECT OF METAL IONS IN ORGANIC SYNTHESIS. XXXV SIMPLE AND CONVENIENT AROMATIC ALKYLATION OF SOME ALKENYLPHENOL DERIVATIVES WITH tert-ALKYL METHYL ETHERS IN THE PRESENCE OF TIN(IV) CHLORIDE

Attanasi, Orazio A.,Filippone, Paolino,Balducci, Sandro

, p. 487 - 489 (2007/10/02)

A very mild, simple and convenient method for the aromatic alkylation of some alkenylphenol derivatives with tert-alkyl methyl ethers to give sterically hindered phenols useful as antioxidants is reported.The reaction occurs with good yields at room temperature and is promoted by tin(IV) chloride.

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