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193280-13-6

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193280-13-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 193280-13-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,3,2,8 and 0 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 193280-13:
(8*1)+(7*9)+(6*3)+(5*2)+(4*8)+(3*0)+(2*1)+(1*3)=136
136 % 10 = 6
So 193280-13-6 is a valid CAS Registry Number.

193280-13-6Upstream product

193280-13-6Downstream Products

193280-13-6Relevant articles and documents

Selective fluorination of (1R,3S)-(+)-camphoric acid with sulphur tetrafluoride. Preparation of fluorinated optically active derivatives of 1,2,2-trimethylcyclopentane

Dmowski, Wojciech,Kozlowski, Tomasz

, p. 187 - 190 (1997)

Treatment of (1R,3S)-(+)-camphoric acid (1) with sulphur tetrafluoride at ambient temperature gives, in general, three products: 1,2,2-trimethyl-3-trifluoromethyl-1-cyclopentanoyl fluoride (2), 2,2,4,4-tetrafluoro-1,8,8-trimethyl-3-oxa-bicyclo[3.2.1]octane (3) and camphoroyl difluoride (4). The ratio of products strongly depends on the reaction time. Alkaline hydrolysis of (2) gives 1,2,2-trimethyl-3-trifluoromethyl-1-cyclopentanecarboxylic acid (5), quantitatively. All products exhibit optical activity.

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