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501432-17-3

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501432-17-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 501432-17-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,0,1,4,3 and 2 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 501432-17:
(8*5)+(7*0)+(6*1)+(5*4)+(4*3)+(3*2)+(2*1)+(1*7)=93
93 % 10 = 3
So 501432-17-3 is a valid CAS Registry Number.

501432-17-3Relevant articles and documents

Novel preparation of (2-azidomethyl)benzoic acid and an application as a protective group

Matsuda, Hiroko,Hashimoto, Masaru,Okuno, Toshikatsu

, p. 3347 - 3355 (2002)

A novel preparation method of 2-(azidomethyl)benzoic acid, a precursor of (2-azidomethyl)benzoyl (AZMB) protective group, was developed which can provide pure sample in gram scale without chromatographic purifications. Reductive cleavage using triphenylphosphine was found to be effective in the case of sterically hindered ester that resists under basic hydrolysis.

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