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1058131-94-4

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1058131-94-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1058131-94-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,5,8,1,3 and 1 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1058131-94:
(9*1)+(8*0)+(7*5)+(6*8)+(5*1)+(4*3)+(3*1)+(2*9)+(1*4)=134
134 % 10 = 4
So 1058131-94-4 is a valid CAS Registry Number.

1058131-94-4Relevant articles and documents

Total synthesis of (-)-colchicine by an oxyallyl [4 + 3] cycloaddition

Lee, Jae Chol,Cha, Jin Kun

, p. 10175 - 10184 (2007/10/03)

An enantioselective synthesis of (-)-colchicine, free from isocolchicine, is delineated and features tandem application of the intramolecular Diels-Alder reaction of acetylene-tethered oxazoles and the [4+3] cycloaddition of oxyallyls. This work underscores the synthetic utility of little explored α-alkoxy substituted oxyallyls. (C) 2000 Elsevier Science Ltd.

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