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L-Cysteine, N-[(1,1-dimethylethoxy)carbonyl]-S-[(1R,2R,3E)-2-[[(1,1-dimethylethoxy )carbonyl]amino]-4-oxo-3-(phenylmethylene)cyclopentyl]- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

657397-29-0

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657397-29-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 657397-29-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,5,7,3,9 and 7 respectively; the second part has 2 digits, 2 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 657397-29:
(8*6)+(7*5)+(6*7)+(5*3)+(4*9)+(3*7)+(2*2)+(1*9)=210
210 % 10 = 0
So 657397-29-0 is a valid CAS Registry Number.

657397-29-0Downstream Products

657397-29-0Relevant academic research and scientific papers

IMPROVEMENTS IN PHARMACEUTICALLY USEFUL COMPOUNDS

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Page 68-69, (2010/11/30)

A compound of formula (I) or (II): wherein A is hydrogen or CR1R2; Y and Z are each, independently, hydrogen or a halogen;X is -NR4R5, or R7; R1 is hydrogen, or a substituted or unsubstituted alkyl or alkenyl group containing 1-4 carbon atoms; when X is -NR4R5, R2 is a substituted or unsubstituted alkyl, alkenyl, alkynyl, aryl, aralkyl aralkenyl, or aralkynyl group, that optionally includes at least one heteroatom in its carbon skeleton and contains 1-12 carbon atoms; when X is R7, R2 is an unsubstituted alkyl, alkenyl or alkynyl group, or a substituted or unsubstituted aryl, aralkyl aralkenyl, or aralkynyl group, that optionally includes at least one heteroatom in its carbon skeleton and contains 1-12 carbon atoms; R3 is a substituted or unsubstituted alkyl, alkenyl, alkynyl, aryl, aralkyl aralkenyl, or aralkynyl group, that optionally includes at least one heteroatom in its carbon skeleton and contains 1-12 carbon atoms; R4 is hydrogen, a substituted or unsubstituted alkyl, alkenyl, alkynyl, aryl, aralkyl aralkenyl, or aralkynyl group, that optionally includes at least one heteroatom in its carbon skeleton and contains 1-12 carbon atoms, -COOR8, or -COR8; R5 is hydrogen, or a substituted or unsubstituted alkyl or alkenyl group containing 1-5 carbon atoms; R7 is an unsubstituted alkyl, alkenyl, or alkynyl group, that contains 1-4 carbon atoms; and, R8 is an unsubstituted or halo-substituted alkyl, aryl, or aralkyl group, that contains 1-12 carbon atoms.

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