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53459-50-0

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53459-50-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 53459-50-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,3,4,5 and 9 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 53459-50:
(7*5)+(6*3)+(5*4)+(4*5)+(3*9)+(2*5)+(1*0)=130
130 % 10 = 0
So 53459-50-0 is a valid CAS Registry Number.

53459-50-0Relevant articles and documents

Peptide-Catalyzed Highly Asymmetric Cross-Aldol Reaction of Aldehydes to Biomimetically Synthesize 1,4-Dicarbonyls

Da, Chao-Shan,Du, Zhi-Hong,Qin, Wen-Juan,Tao, Bao-Xiu,Wang, Pei,Xu, Yan-Li,Yuan, Meng

, (2020)

β-Turn tetrapeptides were demonstrated to catalyze asymmetric aldol reaction of α-branched aldehydes and α-carbonyl aldehydes, i.e. glyoxylates and α-ketoaldehydes, to biomimetically synthesize acyclic all-carbon quaternary center-bearing 1,4-dicarbonyls in high yield and excellent enantioselectivity under mild conditions. The spatially restricted environment of the tetrapeptide warrants high enantioselectivity and yield with broad substrates. Using this protocol, (R)-pantolactone, the key intermediate of vitamin B5, was readily accessed in a practical, efficient, and environmentally benign process from inexpensive starting materials.

Electrochemical removal of the picolinoyl group under mild acidic conditions, application to the protection of amines in peptide synthesis

Auzeil, Nicolas,Dutruc-Rosset, Gilles,Largeron, Martine

, p. 2283 - 2286 (2007/10/03)

The picolinoyl group can be used as a convenient protective group for amines in peptide chemistry. Deprotection is performed by electrochemical reduction under mild acidic conditions.

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