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57758-55-1

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57758-55-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 57758-55-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,7,5 and 8 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 57758-55:
(7*5)+(6*7)+(5*7)+(4*5)+(3*8)+(2*5)+(1*5)=171
171 % 10 = 1
So 57758-55-1 is a valid CAS Registry Number.

57758-55-1Relevant articles and documents

N-substituted pyrrolinones from enamines and α-dicarbonyls

Caballero, Esther,Puebla, Pilar,Domercq, Maria,Medarde, Manuel,Lopez, Jose-L.,San Feliciano, Arturo

, p. 7849 - 7856 (1994)

The reaction between N-substituted enamines and phenylglyoxal or glyoxal yielded Δ2-pyrrolin-5-ones in moderate to good yields. An uncommon pyrrolo [2,1-b]thiazole derivative was formed as a minor product when a N-(2-mercaptoethyl)enamine was used as the starting reagent. An explanation for the regiochemistry of the reaction is proposed.

Novel one-pot, three-component synthesis of new 2-alkyl-5-aryl-(1H)- pyrrole-4-ol in water

Khalili, Behzad,Jajarmi, Pedram,Eftekhari-Sis, Bagher,Hashemi, Mohammed M.

, p. 2090 - 2095 (2008/09/18)

(Chemical Equation Presented) New 2-alkyl-5-aryl-(1H)-pyrrole-4-ol derivatives were synthesized via three-component reaction of β-dicarbonyl compounds with arylglyoxals in the presence of ammonium acetate in water at room temperature.

Synthesis and pharmacological evaluation of a series of analgesic and antiinflammatory 4-aminopyrroles

Tarzia,Panzone,Leali,Burdisso,Schiatti,Selva

, p. 538 - 558 (2007/10/02)

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