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54759-58-9

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54759-58-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 54759-58-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,7,5 and 9 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 54759-58:
(7*5)+(6*4)+(5*7)+(4*5)+(3*9)+(2*5)+(1*8)=159
159 % 10 = 9
So 54759-58-9 is a valid CAS Registry Number.

54759-58-9Downstream Products

54759-58-9Relevant articles and documents

Convenient green preparation of dipeptides using unprotected α-amino acids

Ezawa, Tetsuya,Jung, Seunghee,Kawashima, Yuya,Noguchi, Takuya,Imai, Nobuyuki

, p. 75 - 83 (2017/01/10)

Dipeptides and amides were obtained in high yields from N-carbobenzyloxy α-amino acids and 3-phenylpropanoic acid with unprotected α-amino acids via the corresponding mixed carbonic carboxylic anhydrides using ethyl chloroformate and triethylamine by an ecological and convenient method in which the protection of C-terminals is not needed.

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