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1338547-31-1

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1338547-31-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1338547-31-1 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, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1338547-31:
(9*1)+(8*3)+(7*3)+(6*8)+(5*5)+(4*4)+(3*7)+(2*3)+(1*1)=171
171 % 10 = 1
So 1338547-31-1 is a valid CAS Registry Number.

1338547-31-1Downstream Products

1338547-31-1Relevant articles and documents

METHOD FOR PREPARING 3-KETO-BENZOFURANE DERIVATIVES

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Paragraph 0061; 0062; 0063, (2013/07/05)

The invention relates to a method for preparing 3-keto-benzofurane derivatives of the general formula: Formula (I), where R is an alkyl or aryl group, R1 is hydrogen or an alkyl or aryl group, and R2 is a substituted alkyl or phenyl group. Said preparation method involves coupling a derivative of Formula III, where X is chlorine, bromine, or iodine or a sulfonate grouping: Formula (III) with a sulfonamide derivative of the formula R—SO2—NH2 in the presence of a basic agent and a catalytic system formed of a complex between a palladium compound and a ligand.

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