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23010-53-9

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23010-53-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 23010-53-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,0,1 and 0 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 23010-53:
(7*2)+(6*3)+(5*0)+(4*1)+(3*0)+(2*5)+(1*3)=49
49 % 10 = 9
So 23010-53-9 is a valid CAS Registry Number.

23010-53-9Downstream Products

23010-53-9Relevant articles and documents

THE PREPARATION AND REACTIONS OF MIXED ANHYDRIDES OF N-ALKOXYCARBONYLAMINO ACIDS

Chen, Francis M. F.,Benoiton, N. Leo

, p. 619 - 625 (2007/10/02)

Pure mixed anhydrides R1OCO-Xxx-O-COOR2 (Xxx=NHCHRCO) have been obtained by reaction of N-alkoxycarbonylamino acids R1OCO-Xxx-OH with alkyl chloroformate R2OCOCl (R2=methyl, ethyl, isobutyl, menthyl)

Mixed Anhydrides in Peptide Synthesis. Reduction of Urethane Formation and Racemization Using N-Methylpiperidine as the Tertiary Amine Base

Chen, Francis M. F.,Steinauer, Rene,Benoiton, N. Leo

, p. 2939 - 2941 (2007/10/02)

The side reactions of urethane formation and racemization accompanying couplings by the mixed anhydride method are reduced when N-methylpiperidine is used as base, the best results being achieved in dichloromethane.

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