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178814-03-4

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178814-03-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 178814-03-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,8,8,1 and 4 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 178814-03:
(8*1)+(7*7)+(6*8)+(5*8)+(4*1)+(3*4)+(2*0)+(1*3)=164
164 % 10 = 4
So 178814-03-4 is a valid CAS Registry Number.

178814-03-4Downstream Products

178814-03-4Relevant articles and documents

Formal transfers of hydride from carbon-hydrogen bonds. Attempted generation of H2 by intramolecular protonolyses of the activated carbon-hydrogen bonds of dihydrobenzimidazoles

Brunet,Wuest

, p. 689 - 696 (2007/10/03)

Protonolyses of carbon-hydrogen bonds can occur under suitable conditions to produce carbocations and H2. In an effort to accelerate these fundamental reactions, we have attempted to make them intramolecular by devising compounds in which carbon-hydrogen bonds designed to be particularly good formal donors of hydride are held in close proximity to acidic sites. Dihydrobenzimidazoles 4 and 11 are compounds of this type, since the carbon-hydrogen bonds at C2 are activated as formal donors of hydride by adjacent lone pairs in a dihydroaromatic ring, and acidic anilinium and carboxylic acid groups are held nearby. Unfortunately, this proximity does not lead to the formation of H2 by protonolysis; instead, other reactions intervene when compounds 4 and 11 are subjected to pyrolysis.

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