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557777-74-9

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557777-74-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 557777-74-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,5,7,7,7 and 7 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 557777-74:
(8*5)+(7*5)+(6*7)+(5*7)+(4*7)+(3*7)+(2*7)+(1*4)=219
219 % 10 = 9
So 557777-74-9 is a valid CAS Registry Number.

557777-74-9Downstream Products

557777-74-9Relevant academic research and scientific papers

Transamidation of primary amides with amines using hydroxylamine hydrochloride as an inorganic catalyst

Allen, C. Liana,Atkinson, Benjamin N.,Williams, Jonathan M. J.

, p. 1383 - 1386 (2012)

Metal-free catalysis: A method for the transamidation of primary amides with primary or secondary amines provides access to secondary and tertiary amides, by utilizing catalytic quantities of hydroxylamine hydrochloride to activate the chemically robust primary amide group (see scheme). A mechanism of primary amide activation through a hydrogen-bonding complex is proposed. Copyright

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