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554423-67-5

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554423-67-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 554423-67-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,5,4,4,2 and 3 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 554423-67:
(8*5)+(7*5)+(6*4)+(5*4)+(4*2)+(3*3)+(2*6)+(1*7)=155
155 % 10 = 5
So 554423-67-5 is a valid CAS Registry Number.

554423-67-5Relevant articles and documents

Thiourea-catalyzed asymmetric michael addition of activated methylene compounds to α,β-unsaturated imides: Dual activation of imide by intra- and intermolecular hydrogen bonding

Inokuma, Tsubasa,Hoashi, Yasutaka,Takemoto, Yoshiji

, p. 9413 - 9419 (2007/10/03)

A thiourea-catalyzed asymmetric Michael addition of activated methylene compounds to α,β-unsaturated imides derived from 2-pyrrolidinone and 2-methoxybenzamide has been developed. In the case of 2-pyrrolidinone derivatives, the reaction with malononitrile

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