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1,2;5,6-di-O-isopropylidene-D-mannitol 3,4-bis(ethyloxalate) is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

138903-77-2

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138903-77-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 138903-77-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,9,0 and 3 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 138903-77:
(8*1)+(7*3)+(6*8)+(5*9)+(4*0)+(3*3)+(2*7)+(1*7)=152
152 % 10 = 2
So 138903-77-2 is a valid CAS Registry Number.

138903-77-2Downstream Products

138903-77-2Relevant academic research and scientific papers

Synthesis and deprotection of cyclic oxalate

Kim, Yun-Young

, p. 6364 - 6366 (2015/02/19)

As a new protective group for diols, cyclic oxalates [trans-1,2-cyclo-hexane diol 1,2-oxalate (1), 1,2:5,6-di-O-isopropylidene-D-mannitol 3,4-oxalate (2) and 1,2-propanediol 1,2-oxalate (3)] were synthesized by using oxalyl chloride, ethyloxalyl chloride,

Preparation and reaction of cyclic oxalate of diols

Kim,Hurh,Na Chung

, p. 2361 - 2367 (2007/10/02)

Cyclic oxalates were efficiently prepared by the reaction of diols with ethyl oxalyl chloride in the presence of triethylamine. They were stable under acidic conditions but cleaved to diols under basic conditions.

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