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20770-16-5

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20770-16-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 20770-16-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,7,7 and 0 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 20770-16:
(7*2)+(6*0)+(5*7)+(4*7)+(3*0)+(2*1)+(1*6)=85
85 % 10 = 5
So 20770-16-5 is a valid CAS Registry Number.

20770-16-5SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 13, 2017

Revision Date: Aug 13, 2017

1.Identification

1.1 GHS Product identifier

Product name ripariochromene A

1.2 Other means of identification

Product number -
Other names 1-(7-Hydroxy-8-methoxy-2,2-dimethyl-2H-chromen-6-yl)-ethanone

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:20770-16-5 SDS

20770-16-5Downstream Products

20770-16-5Relevant articles and documents

NUCLEAR ISOPRENYLATION OF POLYHYDROXYACETHOPHENONES ACID CATALYSED CONDENSATION WITH ISOPRENE

Ahluwalia, V. K.,Arora, K. K.

, p. 1437 - 1440 (2007/10/02)

A novel method of nuclear isoprenylation leading to the exclusive formation of 2,2-dimethylchromans has been achieved by the direct condensation of polyhydroxyacetophenones with isoprene in presence of phosphoric acid.Acetylchromans, thus obtained, are dehydrogenated with DDQ to given corresponding 2,2-dimethylchromenes.Using this method, synthesis of number of naturally occuring chromenes, viz. ripariochromene A (6), eupatoriochromene (10), encecalin (11), isoevodionol (16), evodionol (17) and methylevodionol (18) has been affected.

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