Welcome to LookChem.com Sign In|Join Free

CAS

  • or

111549-98-5

Post Buying Request

111549-98-5 Suppliers

Recommended suppliersmore

  • Product
  • FOB Price
  • Min.Order
  • Supply Ability
  • Supplier
  • Contact Supplier

111549-98-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 111549-98-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,1,5,4 and 9 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 111549-98:
(8*1)+(7*1)+(6*1)+(5*5)+(4*4)+(3*9)+(2*9)+(1*8)=115
115 % 10 = 5
So 111549-98-5 is a valid CAS Registry Number.

111549-98-5Relevant articles and documents

SYNTHESIS OF RIBOFURANOSIDES BY CATALYSIS WITH LEWIS ACIDS. GLYCOSIDATION VERSUS TRANSACETYLATION

Chiu-Machado, Ivan,Castro-Palomino, Julio C.,Madrazo-Alonso, Odalys,Lopetegui-Palacios, Carlos,Verez-Bencomo, Vicente

, p. 551 - 562 (2007/10/02)

Several ribofuranosyl derivatives bearing trichloroacetimidoyl or acetyl leaving groups in a Lewis acid promoted ribosylation reaction were prepared and used in an attempt to improve the yield and to avoid donor -> acceptor transacetylation.Trichloroaceti

Synthesis of fragments of the capsular polysaccharide of Haemophilus influenzae type b. Part I. Preparation of suitably protected 1-O-β-d-ribofuranosyl-d-ribitol building blocks

Hermans,Poot,Kloosterman,van der Marel,van Boeckel,Evenberg,Poolman,Hoogerhout,van Boom

, p. 498 - 504 (2007/10/02)

The synthesis of the protected ribosylribitol derivatives 15 and 17, which are building blocks for the preparation of fragments of the H. influenzae type b polysaccharide, is presented. Starting from d-ribonolactone (1), 5-O-allyl-2,3,4-tri-O-benzyl-d-ribitol (8) was prepared in seven steps (Scheme 1). Coupling of 8 with 1-O-acetyl-2,3,5-tri-O-benzoyl-β-d-ribofuranose (9) in the presence of trimethylsilyl trifluoromethanesulfonate gave the ribosylribitol derivative 10 (Scheme 2), which was debenzoylated to afford compound 11. The C-3′- and C-5′-hydroxyl functions of the ribose moiety of 11 were protected with the 1,1,3,3-tetraisopropyldisiloxane-1,3-diyl group and the C-2′ position with the benzyloxymethyl group. Compound 13 thus obtained was converted into its 5-O-trans-1-propenyl isomer 14. Cleavage of the propenyl group from 14 gave compound 15, which can be phosphorylated at O-5 of the ribitol. On the other hand, removal of the 3′,5′-protection from 14 and subsequent blocking of the primary hydroxyl function yielded ribosylribitol derivative 17 having a 3′-hydroxyl function available for phosphorylation.

Post a RFQ

Enter 15 to 2000 letters.Word count: 0 letters

Attach files(File Format: Jpeg, Jpg, Gif, Png, PDF, PPT, Zip, Rar,Word or Excel Maximum File Size: 3MB)

1

What can I do for you?
Get Best Price

Get Best Price for 111549-98-5