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6946-18-5

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6946-18-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 6946-18-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,9,4 and 6 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 6946-18:
(6*6)+(5*9)+(4*4)+(3*6)+(2*1)+(1*8)=125
125 % 10 = 5
So 6946-18-5 is a valid CAS Registry Number.

6946-18-5SDS

SAFETY DATA SHEETS

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.Identification

1.1 GHS Product identifier

Product name L-glycero-D-manno-heptopyranose

1.2 Other means of identification

Product number -
Other names heptopyranose

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:6946-18-5 SDS

6946-18-5Relevant articles and documents

Crystal and molecular structure of methyl L-glycero-α-D-manno- heptopyranoside, and synthesis of 1→7 linked L-glycero-D-manno-heptobiose and its methyl α-glycoside

Artner, Daniel,Stanetty, Christian,Mereiter, Kurt,Zamyatina, Alla,Kosma, Paul

experimental part, p. 1739 - 1746 (2011/12/02)

Methyl L-glycero-α-D-manno-heptopyranoside was synthesized in good yield by a Fischer-type glycosylation of the heptopyranose with methanol in the presence of cation-exchange resin under reflux and microwave conditions, respectively. The compound crystallized from 2-propanol in an orthorhombic lattice of space group P21212 showing a comparatively porous structure with a 2-dimensional O-H···O hydrogen bond network. As model compounds for the side chain domains of the inner core structure of bacterial lipopolysaccharide, L-glycero-α-D-manno-heptopyranosyl-(1→7)-L- glycero-D-manno-heptopyranose and the corresponding disaccharide methyl α-glycoside were prepared. The former compound was generated via glycosylation of a benzyl 5,6-dideoxy-hept-5-enofuranoside intermediate followed by catalytic osmylation and deprotection. The latter disaccharide was efficiently synthesized in good yield by a straightforward coupling of an acetylated N-phenyltrifluoroacetimidate heptopyranosyl donor to a methyl 2,3,4,6-tetra-O-acetyl heptopyranoside acceptor derivative followed by Zemplen deacetylation.

SYNTHESIS OF L-glycero-D-manno-HEPTOSE

Boons, G. J. P. H.,Klein, P. A. M. van der,Marel, G. A. van der,Boom, J. H. van

, p. 507 - 508 (2007/10/02)

The easily accessible benzyl 2,3,4-tri-O-benzyl-α-D-manno-hexodialdo-1,5-pyranoside (2) can be converted, in a highly stereoselective manner, by the two-step Tamao method to benzyl 2,3,4-tri-O-benzyl-β-L-glycero-α-D-manno-heptopyranoside (4a).

NEW SYNTHESES OF D- AND L-GLYCERO-D-MANNO-HEPTOSES

Dziewiszek, Krzysztof,Zamoiski, Aleksander

, p. 163 - 172 (2007/10/02)

Three methods for the synthesis of the title compounds starting from benzyl 2,3,4-tri-O-benzyl-α-D-manno-hexodialdo-1,5-pyranoside (7) have been elaborated.Conversion of 7 into the cyanohydrin followed by reduction to give the amine and then deamination gave a derivative of L-glycero-D-manno-heptose in low yield.Condensation of 7 with 2-methylfuran gave two stereoisomeric 6-C-(2-methyl-5-furyl) derivatives.The preponderant stereoisomer was ozonised and then reduced to give a derivative of D-glycero-D-manno-heptose.Condensation of 7 with allyloxymethylmagnesium chloride gave derivatives of both heptoses in good yield and with an L-glycero-D-glycero ratio of 3.2:1.Deprotection of these derivatives gave the heptoses in high yield.

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