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Check Digit Verification of cas no

The CAS Registry Mumber 207303-15-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,7,3,0 and 3 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 207303-15:
(8*2)+(7*0)+(6*7)+(5*3)+(4*0)+(3*3)+(2*1)+(1*5)=89
89 % 10 = 9
So 207303-15-9 is a valid CAS Registry Number.

InChI:InChI=1/C8H10ClNO/c1-6(4-9)3-8-5-11-7(2)10-8/h3,5H,4H2,1-2H3/b6-3+

207303-15-9SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 12, 2017

Revision Date: Aug 12, 2017

1.Identification

1.1 GHS Product identifier

Product name	4-(3-chloro-2-methylprop-1-enyl)-2-methyl-1,3-oxazole

1.2 Other means of identification

Product number	-
Other names	Oxazole,4-[(1E)-3-chloro-2-methyl-1-propenyl]-2-methyl-(9CI)

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:207303-15-9 SDS

207303-15-9Upstream product

207303-15-9Downstream Products

207303-15-9Relevant articles and documents

Synthetic studies of antitumor macrolide rhizoxin: Stereoselective syntheses of the C(1)-C(9) and C(12)-C(26) subunits

Burke, Steven D.,Hong, Jian,Lennox, Joseph R.,Mongin, Andrew P.

, p. 6952 - 6967 (2007/10/03)

A triply convergent synthetic approach which culminates in the enantioselective syntheses of the C(1)-C(9) and C(12)-C(26) subunits of the macrolide antitumor agent rhizoxin is described. The central C(12)-C(20) subunit 4 has been prepared efficiently via diastereoselective enzymatic acetate hydrolysis of 15 with porcine pancreatic lipase, a chelation- controlled Ireland-Claisen rearrangement (10 → 12) combined with kinetic bromolactonization (12 → 14), and Mitsunobu inversion (23 → 26) to introduce the three contiguous C(15)-C(17) stereocenters. Formation of the C(18)-C(19) trisubstituted (E)-olefin was achieved by a stereoselective Horner-Wadsworth-Emmons reaction. The central segment 4 and the oxazole chromophore side chain 3 were coupled using another highly stereoselective Horner-Wadsworth-Emmons reaction. Two different lactone subunits [C(1)-C(9) segment 5 and C(3)-C(10) segment 47] were also prepared, employing a thermodynamically controlled diastereotopic group differentiation tactic for establishing the C(5) stereochemistry.

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CAS

207303-15-9