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1253375-92-6

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1253375-92-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1253375-92-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,3,3,7 and 5 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1253375-92:
(9*1)+(8*2)+(7*5)+(6*3)+(5*3)+(4*7)+(3*5)+(2*9)+(1*2)=156
156 % 10 = 6
So 1253375-92-6 is a valid CAS Registry Number.

1253375-92-6Relevant articles and documents

Surfactant-mediated thioglycosylation of 1-hydroxy sugars in water

Ratthachag, Trichada,Buntasana, Supanat,Vilaivan, Tirayut,Padungros, Panuwat

, p. 822 - 836 (2021/02/09)

Thioglycosides are an important class of sugars, since they can be used as non-ionic biosurfactants, biomimetic glycosides, and building blocks for carbohydrate synthesis. Previously, Br?nsted- or Lewis-acid-catalyzed dehydrative glycosylations between a 1-hydroxy sugar and a thiol have been reported to yield open-chain dithioacetal sugars as the major products instead of the desired thioglycosides. These dithioacetal sugars are by-products derived from the endocyclic bond cleavage of the thioglycosides. Herein, we report dehydrative glycosylation in water mediated by a Br?nsted acid-surfactant combined catalyst (BASC). Glycosylations between 1-hydroxy furanosyl/pyranosyl sugars and primary, secondary, and tertiary aliphatic/aromatic thiols in the presence of dodecyl benzenesulfonic acid (DBSA) provided the thioglycoside products in moderate to good yields. Microwave irradiation led to improvements in the yields and a shortening of the reaction time. Remarkably, open-chain dithioacetal sugars were not detected in the DBSA-mediated glycosylations in water. This method is a simple, convenient, and rapid approach to produce a library of thioglycosides without the requirement of anhydrous conditions. Moreover, this work also provides an excellent example of complementary reactivity profiles of glycosylation in organic solvents and water.

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