Welcome to LookChem.com Sign In|Join Free

CAS

  • or

251959-53-2

Post Buying Request

251959-53-2 Suppliers

Recommended suppliersmore

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

251959-53-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 251959-53-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,1,9,5 and 9 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 251959-53:
(8*2)+(7*5)+(6*1)+(5*9)+(4*5)+(3*9)+(2*5)+(1*3)=162
162 % 10 = 2
So 251959-53-2 is a valid CAS Registry Number.

251959-53-2Relevant articles and documents

Asymmetric synthesis of palitantin from the (5R)-tert-butyldimenthylsiloxy-2-cyclohexenone

Hareau, Georges,Koiwa, Masakazu,Hanazawa, Takeshi,Sato, Fumie

, p. 7493 - 7496 (2007/10/03)

(+)-Palitantin (2) has been synthesized in 25% overall yield from the (5R)-tert-butyldimethylsiloxy-2-cyclohexenone [(R)-1] where a remarkable diastereoselective cat. OsO4 cis-dihydroxylation of (R)-1 furnished the precursor of the optically pure (5R,6R)-bis-trimethylsiloxy 2-cyclohexenone (7) which underwent highly selectively the 1,4-addition reaction of the 1,3-heptadienyl cyanocuprate to give, after trapping of the corresponding copper enolate with formaldehyde, the target compound.

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 251959-53-2