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1338547-28-6

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1338547-28-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1338547-28-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,3,8,5,4 and 7 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1338547-28:
(9*1)+(8*3)+(7*3)+(6*8)+(5*5)+(4*4)+(3*7)+(2*2)+(1*8)=176
176 % 10 = 6
So 1338547-28-6 is a valid CAS Registry Number.

1338547-28-6Relevant articles and documents

PROCESS FOR PREPARING SULFONAMIDOBENZOFURAN DERIVATIVES

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Paragraph 0049-0053, (2013/03/26)

The invention relates to a process for preparing 5-sulfonamido-benzofuran derivatives of general formula: formula (I) in which R represents an alkyl or aryl group and R1 and R2 represent hydrogen or an alkyl or aryl group. According to the invention, the compounds of formula I are prepared by coupling a benzofuran derivative of general formula II, where X represents chlorine, bromine or iodine or a sulfonate group: formula (II) with a sulfonamide derivative of formula R—SO2—NH2, in the presence of a basic agent and of a catalyst system formed from a complex between a palladium compound and a ligand.

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