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.beta.-D-erythro-Hexopyranose, 1,6-anhydro-2,3-dideoxy-4-O-(phenylmethyl)- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

40838-19-5

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40838-19-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 40838-19-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,8,3 and 8 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 40838-19:
(7*4)+(6*0)+(5*8)+(4*3)+(3*8)+(2*1)+(1*9)=115
115 % 10 = 5
So 40838-19-5 is a valid CAS Registry Number.

40838-19-5Downstream Products

40838-19-5Relevant articles and documents

Synthesis of Carbon-Branched Sugars Involving an Unprecedented 1,5- or 1,6-Alkyl Transposition Reaction

Sridhar, Perali Ramu,Rao, Boddu Umamaheswara,Reddy, Gadi Madhusudhan

, p. 4752 - 4756 (2019/07/31)

An unusual 1,5- or 1,6-alkyl transposition along with acetalization of 3-deoxy glycals is reported. TMSOTf was used as the Lewis acid for carrying out the transformation. A plausible mechanism is proposed. The novel method provided access to 2-C-branched bicyclic acetals of various deoxy-sugar derivatives as well as 2-C-branched levoglycosan derivatives.

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