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54956-98-8

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54956-98-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 54956-98-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,9,5 and 6 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 54956-98:
(7*5)+(6*4)+(5*9)+(4*5)+(3*6)+(2*9)+(1*8)=168
168 % 10 = 8
So 54956-98-8 is a valid CAS Registry Number.

54956-98-8Downstream Products

54956-98-8Relevant articles and documents

Allenes. Part 40. 2:1 Bis-adducts from Allenic Nitriles and Phenylpropynenitriles with Difunctional Nucleophiles and their Conversion into Heterocycles

Landor, Stephen R.,Landor, Phyllis D.,Fomum, Z. Tanee,Mbafor, J. Tanyi,Nkengfack, A. Ephraim

, p. 1223 - 1228 (2007/10/02)

Two equivalents of allenic nitrile or phenylpropynenitrile add to 1,2- and 1,3-diamines, 2-aminoethanethiol, ethanedithiol, and 4-aminopyridine to give 2:1 adducts of structure (2), (4), and (5).Ring closure and elimination of one equivalent each of allenic nitrile (or phenylpropynenitrile) and acetonitrile gave the imidazolines (29), the thiazolines (30), and the tetrahydropyrimidines (31).Mass spectral fission patterns are discussed.

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