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138552-54-2

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138552-54-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 138552-54-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,5,5 and 2 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 138552-54:
(8*1)+(7*3)+(6*8)+(5*5)+(4*5)+(3*2)+(2*5)+(1*4)=142
142 % 10 = 2
So 138552-54-2 is a valid CAS Registry Number.

138552-54-2Downstream Products

138552-54-2Relevant articles and documents

Regioselective synthesis of C-nucleosides by 1,3-dipolar cycloaddition of arylnitrile oxides to 5,6-dideoxy-1,2-O-isopropylidene-α-D-xylo-hex-5-enofuranose

Al-Timari, Usama A. R.,Fisera, Lubor

, p. 121 - 127 (2007/10/02)

The synthesis of 3-aryl-5-(1,2-O-isopropylidene-α-D-xylo-tetrofuranos-4-yl)-2-isoxazoline (3) from arylnitrile oxides and 5,6-dideoxy-1,2-O-isopropylidene-α-D-xylo-hex-5-enofuranose (1) is described.The 1,3-dipolar cycloaddition reactions give mainly anti-adducts (>=95percent ?-facial stereoselectivity).

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