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142039-18-7

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142039-18-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 142039-18-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,0,3 and 9 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 142039-18:
(8*1)+(7*4)+(6*2)+(5*0)+(4*3)+(3*9)+(2*1)+(1*8)=97
97 % 10 = 7
So 142039-18-7 is a valid CAS Registry Number.

142039-18-7Downstream Products

142039-18-7Relevant articles and documents

Dehalogenation of Aminodihalogenoboranes by Na/K Alloy in the Presence of Naphthalene, Bis(trimethylsilyl)butadiyne, and 2,5-Dimethylhexadiene

Maringgele, Walter,Knop, Henning,Bromm, Dietmar,Meller, Anton,Dielkus, Sven,et al.

, p. 1807 - 1814 (2007/10/02)

Reaction of naphthalene with Na/K alloy and difluoroborane (1) in 1,2-dimethoxyethane yields the aminodimethoxyborane 2, the bis(amino)borane 3, the diborylethyne 4, and the diboryl oxide 5.By addition of a mixture of bis(trimethylsilyl)butadiyne or 2,5-dimethyl-2,4-hexadiene with dichloro(diisopropylamino)borane to Na/K alloy in hexane the 2,4,5-triborabicyclopentane 7 and the diboretane 8, resp., are obtained. 1H-, 11B-, 13C-, 19F-, 29Si-NMR-, IR, and MS data are given.For 2-4, 7-8 X-ray structure analyses are performed. Key Words: Aminoboranes / Diborylethyne / Diboryl oxide / 2,4,5-Triborabicyclopentane / 1,3-Diboretane

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