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16855-58-6

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16855-58-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 16855-58-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,8,5 and 5 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 16855-58:
(7*1)+(6*6)+(5*8)+(4*5)+(3*5)+(2*5)+(1*8)=136
136 % 10 = 6
So 16855-58-6 is a valid CAS Registry Number.

16855-58-6Relevant articles and documents

Samarium(II) iodide promoted reductive ring opening reaction of cyclopropane-1,1-dicarboxylic esters. Synthesis of substituted 5-Pentanolides from carbonyl compounds and dimethyl cyclopropane-1,1-dicarboxylate

Imamoto, Tsuneo,Hatajima, Toshihiko,Yoshizawa, Takeshi

, p. 7805 - 7808 (1994)

Dimethyl cyclopropane-1,1-dicarboxylate is readily subjected to reductive ring opening reaction with samarium(II) iodide in the presence of tris(dibenzoyl-methiodo)iron(III). The generated organosamarium intermediate is trapped by aliphatic ketones to aff

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