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188432-44-2

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188432-44-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 188432-44-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,8,4,3 and 2 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 188432-44:
(8*1)+(7*8)+(6*8)+(5*4)+(4*3)+(3*2)+(2*4)+(1*4)=162
162 % 10 = 2
So 188432-44-2 is a valid CAS Registry Number.

188432-44-2Downstream Products

188432-44-2Relevant articles and documents

A convenient synthesis of trifluoromethyl ethers by oxidative desulfurization-fluorination of dithiocarbonates

Kanie, Kiyoshi,Tanaka, Yoichiro,Suzuki, Kazundo,Kuroboshi, Manabu,Hiyama, Tamejiro

, p. 471 - 484 (2007/10/03)

Trifluoromethyl ethers R-OCF3 are easily synthesized from the corresponding dithiocarbonates R-OCS2Me (R = aryl or primary alkyl) by a reagent system consisting of 70% HF/pyridine and an N-halo imide. When the reaction is applied to R-OCS2Me wherein R = secondary alkyl, tertiary alkyl, or benzylic group, fluorination leading to the corresponding alkyl fluorides R-F is achieved, whereas a combination of 50% HF/pyridine and N- bromosuccinimide affords the corresponding trifluoromethyl ethers R-OCF3 (R = secondary).

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