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90108-55-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 90108-55-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,1,0 and 8 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 90108-55:
107 % 10 = 7
So 90108-55-7 is a valid CAS Registry Number.



According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 13, 2017

Revision Date: Aug 13, 2017


1.1 GHS Product identifier

Product name 5-O-ACETYL-D-RIBO-1,4-LACTONE

1.2 Other means of identification

Product number -
Other names 5-O-acetyl-D-ribonolactone

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:90108-55-7 SDS

90108-55-7Downstream Products

90108-55-7Relevant articles and documents

Regioselective acylation of d-ribono-1,4-lactone catalyzed by lipases

Sebr?o, Damianni,Sá, Marcus M.,Nascimento, Maria Da Graa

experimental part, p. 551 - 556 (2012/01/13)

Lipases from ten different sources and two mycelium-bound lipases isolated from Amazonian fungi were screened as biocatalysts in the acylation reaction of d-ribono-1,4-lactone with a variety of acyl donors in non-aqueous media. Several reaction parameters were evaluated including the type and amount of enzyme, acyl donor, and organic solvent, as well as the influence of water and the recyclability of the catalyst. When Candida antarctica lipase (CAL-B) was used, the acylation was highly regioselective and the corresponding 5-acyl-d-ribono-1,4-lactones were observed as the sole product. The best conversion (>99%) into 5-acetyl-d-ribono-1,4-lactone was obtained through the combination of vinyl acetate as the acetyl donor and 10 mg (100 U) of CAL-B in dry acetonitrile after 24 h. However, lipases from Burkholderia cepacia (PSL-C and PSL-D), Pseudomonas fluorescens (AK) and Thermomyces langinosus (Lipozyme TL-IM) gave mixtures of mono-, di- and tri-acetylated products in lower conversions. CAL-B maintained its catalytic activity during five cycles of repeated use when decanoic and dodecanoic acids were employed as acyl donors in the acylation of d-ribono-1,4-lactone.

Use of D-Ribonolactone in Organic Synthesis. 2. Scope and Utility

Chen, Shin-Yih,Joullie, Madeleine M.

, p. 2168 - 2174 (2007/10/02)

The scope and utility of D-ribonolactone (1) as chiral template for the synthesis of optically active γ-lactones which are important precursors for many natural products are discussed.The regio- and stereoselective functionalization of 1 is examined.

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