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188443-86-9

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188443-86-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 188443-86-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,8,4,4 and 3 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 188443-86:
(8*1)+(7*8)+(6*8)+(5*4)+(4*4)+(3*3)+(2*8)+(1*6)=179
179 % 10 = 9
So 188443-86-9 is a valid CAS Registry Number.

188443-86-9Relevant articles and documents

Asymmetric synthesis of 5,5-disubstituted thiotetronic acids using an allyl xanthate to dithiocarbonate rearrangement: Total synthesis of (55)-thiolactomycin with revision of the absolute configuration of the natural product

Chambers, Mark S.,Thomas, Eric J.

, p. 417 - 431 (2007/10/03)

An asymmetric synthesis of thiotetronic acids related to the antibiotics thiolactomycin 1 and thiotetromycin 2 has been developed in which the key step is a stereoselective [3.3]-rearrangement of an allyl xanthate to the corresponding dithiocarbonate. Thu

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