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128167-59-9

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128167-59-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128167-59-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,1,6 and 7 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 128167-59:
(8*1)+(7*2)+(6*8)+(5*1)+(4*6)+(3*7)+(2*5)+(1*9)=139
139 % 10 = 9
So 128167-59-9 is a valid CAS Registry Number.

128167-59-9Upstream product

128167-59-9Relevant academic research and scientific papers

Evidence for the rearrangement of P-chloro-phosphirenium ions to P-vinyl-phosphenium ions

Weissman, Steven A.,Baxter

, p. 819 - 822 (1990)

The formation of 1 -diisopropylamino-2,3-diphenyl- 1-(2-chloro- 1,2-diphenylvinyl)phosphirenium ion (2), is postulated to proceed via the rearrangement of a P-chloro-phosphirenium ion to a P-vinyl-phosphenium ion.

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