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178315-47-4

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178315-47-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 178315-47-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,8,3,1 and 5 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 178315-47:
(8*1)+(7*7)+(6*8)+(5*3)+(4*1)+(3*5)+(2*4)+(1*7)=154
154 % 10 = 4
So 178315-47-4 is a valid CAS Registry Number.

178315-47-4Downstream Products

178315-47-4Relevant articles and documents

Formation of spiro indane derivatives from hydroxy lactams derived from N-(1-phenylethyl)-phthalimide and -pyridine-2,3-dicarboximide

Bahajaj, Abood A.,Vernon, John M.

, p. 1041 - 1046 (2007/10/03)

Spiro[indane-1,7′-pyrrolo[3,4-b]pyridin]-5′-ones 18-22 are formed by acid-catalysed rearrangement from 7-aryl-7-hydroxy-6-(1-phenylethyl)-6,7-dihydropyrrolo[3,4-b]pyridin-5-ones. Further spiro indanes 39, 43 and 44 and spiro naphthalenes 41, 42, 45 and 46 are obtained from 3-(ω-phenylalkyl)-3-hydroxy-2-(1-phenylethyl)isoindolin-1-ones or from 7-(ω-phenylalkyl)-7-hydroxy-6-(1-phenylethyl)-6,7-dihydropyrrolo[3,4-b] pyridin-5-ones via α,α-cyclisation of N-acyliminium ion intermediates.

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