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245364-50-5

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245364-50-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 245364-50-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,4,5,3,6 and 4 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 245364-50:
(8*2)+(7*4)+(6*5)+(5*3)+(4*6)+(3*4)+(2*5)+(1*0)=135
135 % 10 = 5
So 245364-50-5 is a valid CAS Registry Number.

245364-50-5Downstream Products

245364-50-5Relevant articles and documents

N-carboalkoxy-2-nitrobenzenesulfonamides: A practical preparation of N- Boc-, N-Alloc-, and N-Cbz-protected primary amines

Fukuyama, Tohru,Cheung, Mui,Kan, Toshiyuki

, p. 1301 - 1303 (2007/10/03)

N-Carboalkoxy-2-nitrobenzenesulfonamides, readily prepared by acylation of 2-nitrobenzenesulfonamide (o-NsNH2), can be alkylated by either conventional or Mitsunobu protocols. Since the o-nosyl group can be deprotected under mild conditions, a variety of N-carboalkoxy derivatives of primary amines may be prepared in excellent yields from the corresponding alcohols and/or halides. In addition, allyloxycarbonyl (Alloc), t- butoxycarbonyl (t-Boc), and benzyloxycarbonyl (Cbz) groups can be deprotected in the presence of the o-nosyl group, allowing the resultant N-alkylated 2- nitrobenzenesulfonamides to be used for further preparation of secondary amines.

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