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357399-55-4

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357399-55-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 357399-55-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,5,7,3,9 and 9 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 357399-55:
(8*3)+(7*5)+(6*7)+(5*3)+(4*9)+(3*9)+(2*5)+(1*5)=194
194 % 10 = 4
So 357399-55-4 is a valid CAS Registry Number.

357399-55-4Upstream product

357399-55-4Downstream Products

357399-55-4Relevant articles and documents

Conversion of glucosamine to galactosamine and allosamine derivatives: Control of inversions of stereochemistry at C-3 and C-4

McGeary,Wright,Toth

, p. 5102 - 5105 (2001)

The reactions of sodium benzoate with a series of trimesylates derived from glucosamine have been examined in an attempt to gain facile access to galactosamine analogues. Trimesylate 17, in which the amino group was protected as a phthalimide, underwent double displacement at positions 4 and 6 to give the dibenzoate 18 with the desired galactosamine configuration. In contrast, trimesylates 21 and 27, in which the amino groups were protected as acetamides, unexpectedly underwent double displacement at positions 3 and 6, giving products 22 and 28, respectively, with allosamine configurations.

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