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19902-42-2

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19902-42-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 19902-42-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,9,0 and 2 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 19902-42:
(7*1)+(6*9)+(5*9)+(4*0)+(3*2)+(2*4)+(1*2)=122
122 % 10 = 2
So 19902-42-2 is a valid CAS Registry Number.

19902-42-2SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 17, 2017

Revision Date: Aug 17, 2017

1.Identification

1.1 GHS Product identifier

Product name solidagoic acid A

1.2 Other means of identification

Product number -
Other names Solidagoic acid A

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:19902-42-2 SDS

19902-42-2Downstream Products

19902-42-2Relevant articles and documents

A GENERAL METHOD FOR THE SYNTHESIS OF CLERODANE DITERPENOIDS. STEREOSPECIFIC TOTAL SYNTHESES OF (+/-)-15,16-EPOXY-CIS-CLERODA-3,13(16),14-TRIENE AND (+/-)-MAINGAYIC ACID

Tokoroyama, Takashi,Fujimori, Kaoru,Shimizu, Takayoshi,Yamagiwa, Yoshiro,Monden, Mitsugu,Iio, Hideo

, p. 6607 - 6622 (2007/10/02)

A general method for the syntheses of cis- and trans-clerodane diterpenoids has been developed and its applications to the total syntheses of both representatives 11 and maingayic acid (32) in racemic forms are described.The common Δ4-3-octalone intermediates 2a and 2b were prepared from 3,4-dimethyl-2-cyclohexenone by a stereospecific conjugate addition-alkylation sequence and the subsequent thermodynamically controlled annelation.The dimethylcuprate addition to 2a followed by enolate trapping afforded stereospecifically the cis-alcohol 12, from which (+/-)-11 has been synthesized.On the other hand hydrocyanation of 2b gave trans-intermediate 33, and then it has been converted to (+/-)-maingayic acid (32).

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