Welcome to LookChem.com Sign In|Join Free

CAS

  • or

1268671-91-5

Post Buying Request

1268671-91-5 Suppliers

Recommended suppliersmore

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

1268671-91-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1268671-91-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,6,8,6,7 and 1 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1268671-91:
(9*1)+(8*2)+(7*6)+(6*8)+(5*6)+(4*7)+(3*1)+(2*9)+(1*1)=195
195 % 10 = 5
So 1268671-91-5 is a valid CAS Registry Number.

1268671-91-5Downstream Products

1268671-91-5Relevant articles and documents

Anti-Aldol reactions of chiral alcohol-substituted vinylogous urethanes and the synthesis of (-)-prelactone B

Li, Yu-Jang,Hung, Hsiu-Yin,Liu, Yu-Wei,Lin, Pei-Jhen,Huang, Hung-Jyun

, p. 927 - 935 (2011/03/19)

This paper describes a convenient and efficient method for synthesizing chiral alcohol-substituted vinylogous urethanes, in which the double bond has E configuration was determined by single crystal X-ray analysis. In addition, we investigated the anti-aldol reactions of these chiral vinylogous urethane anions. The use of (1S,2R,4R)-1-(hydroxydiphenylmethyl)-7,7-dimethylbicyclo[2,2, 1]-heptan-2-ol as a chiral auxiliary, provided the best enantioselectivities, and the resulting vinylogous urethane lactone could be used for the synthesis of (-)-prelactone B. A plausible mechanism for the generation of major enantiomeric isomer was discussed.

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 1268671-91-5