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77257-02-4

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77257-02-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 77257-02-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,2,5 and 7 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 77257-02:
(7*7)+(6*7)+(5*2)+(4*5)+(3*7)+(2*0)+(1*2)=144
144 % 10 = 4
So 77257-02-4 is a valid CAS Registry Number.

77257-02-4Downstream Products

77257-02-4Relevant articles and documents

PREPARATION OF α-DEUTERATED L-AMINO ACIDS USING E. coli CELLS CONTAINING TRYPTOPHANASE

Faleev, N. G.,Ruvinov, S. B.,Saporovskaya, M. B.,Belikov, V. M.,Zakomyrdina, L. N.,et al.

, p. 2154 - 2156 (1989)

A preparative method has been developed to obtain a series of α-deuterated L-amino acids with high chemical yields and quantitative optical yields by stereospecific isotope exchange in D2O by the action of E. coli cells with high tryptophanase action.

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