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73838-85-4

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73838-85-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 73838-85-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,3,8,3 and 8 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 73838-85:
(7*7)+(6*3)+(5*8)+(4*3)+(3*8)+(2*8)+(1*5)=164
164 % 10 = 4
So 73838-85-4 is a valid CAS Registry Number.

73838-85-4Downstream Products

73838-85-4Relevant articles and documents

First Michael addition reaction of α-substituted N-diphenylmethyleneglycinate with ethyl propiolate. Synthesis of α-substituted (E)-3,4-dehydroglutamic acids

Rubio, Almudena,Ezquerra, Jesus

, p. 5823 - 5826 (2007/10/02)

(E)-α-substituted 3,4-dehydro glutamic acids 4, were prepared from ethyl N-diphenylmethyleneglycinate 5 by alkylation with a suitable alkyl halide followed by a Michael type addition reaction with ethyl propiolate, giving rise to a mixture of E/Z adducts 7/8. Sequential hydrolysis of the substituted glycine synthons 7/8 afforded the titled compounds 4 as single diastereomers.

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