Chemspider.com ChemSpider | Search and share chemistry

ChemSpider is a free chemical structure database providing fast access to over 100 million structures, properties and associated information.

Chemspider.com Overview

out of 100

Optimization 78 out of 100

ChemSpider.com is a comprehensive platform for chemists, researchers, and students around the world. The site aims to provide fast access to over 34 million chemical structure data, properties, and associated information. The site is home to some of the most extensive chemical databases making it the world’s largest and most credible database for chemical compounds.

The site is user-friendly, and visitors will quickly notice the search bar at the center of the top of the page. Visitors have the option to search for specific chemical structures, synonyms, or even formula names. There is also an advanced search option to refine the search parameters and filter results based on several parameters. The site also has an extensive list of analytical tools available to users free of charge.

The homepage is clean and easy to navigate, with a menu bar located just below the search bar. Visitors can access various areas of the site by clicking on the menu items: Home, Browse, Analytical Tools, Blog, Forum, and Contact Us. Under "Browse," visitors can search and browse through the platform's extensive list of compounds. Here, users can refine their search parameters by elements, formulas, or properties.

The "Analytical Tools" section provides visitors with useful tools to help them conduct chemical research tasks such as structure drawing, mass spectrometry results analysis, and an NMR prediction tool. The "Blog" and "Forum" sections provide users with a platform to share knowledge and experiences, ask other users questions, and get answers.

The platform is hosted by Timico Limited, a renowned hosting provider known for their reliability and quality services. ChemSpider.com is an SSL secure website, meaning it is safe for users to encrypt and transmit data to the website. Site value estimated at $394,200 USD shows the popularity and importance of the site in the field of chemistry.

In conclusion, chemSpider.com is a well-organized and comprehensive site offering much-needed services to professionals and students in the field of chemistry. The site is reliable and involves a vast database of chemical structures and properties, making it an excellent platform for research and learning in the field of chemistry. Visitors will appreciate the site's user-friendly interface, analytical tools, and informative blog making the site family-friendly. With the wide range of services and detailed information offered on the site, it's no wonder that ChemSpider.com receives 6972 unique users per day and 22310.4 pageviews.

Chemspider.com Rank Summary

Global Rank

30,111

Average Load Time

5.84sec

Links In Count

1,667

Website Value

$394,200

Audience Geography. Where are chemspider.com visitors located?

Country	Visitors
United States US	39.4%
China CN	10.3%
India IN	7.3%
Japan JP	4.6%
Canada CA	3.9%
Australia AU	3.2%
Korea KR	2.7%
United Kingdom GB	2.2%
Belgium BE	1.8%
Other	24.4%

Country	Pageviews
United States US	40.3%
China CN	12.4%
India IN	7.4%
Canada CA	4%
Australia AU	3.5%
Japan JP	3%
Korea KR	2.2%
United Kingdom GB	1.8%
Mexico MX	1.5%
Other	24%

Country	Rank
Cyprus CY	1406
Denmark DK	9211
Belgium BE	10283
Australia AU	10612
South Africa ZA	11390
Canada CA	12264
United States US	12702
Philippines PH	13219
Malaysia MY	15655
Korea KR	17927
Pakistan PK	19815
India IN	20133

Where do visitors go on chemspider.com?

Subdomain	Pageviews
chemspider.com	99.61%
cssp.chemspider.com	0.39%

Subdomain	Pageviews per User
cssp.chemspider.com	2
chemspider.com	1.8

Subdomain	Reach
chemspider.com	99.71%
cssp.chemspider.com	0.39%

How popular is chemspider.com?

Period	Global Rank	Global Rank Delta
past 3 months	30111	3370
past month	32071	-7647
past week	34916	5337
yesterday	38599	2652

Days	Pageviews Rank	Pageviews Rank Delta	Pageviews per Million	Pageviews per Million Delta	Pageviews per User	Pageviews per User Delta
90	31449	-2730	215	9%	3.2	41%
30	47051	907	14	-1.43%	1.8	-31.94%
7	52357	9119	12	-19.98%	1.7	-6.011%
1	50362	-13450	14	30%	2.4	70%

Days	Reach Rank	Reach Rank Delta	Reach per Million	Reach per Million Delta
90	31591	5972	25	-23.16%
30	28645	-10897	28	45%
7	30920	4245	26	-14.43%
1	37949	8319	21	-23.88%

Chemspider.com Website Safety

Overview

Last Updated: 05/17/2025

Overall result - chemspider.com is safe.

We gather website safety and reputation data and compare it with available third-party sources so we calculate own safety and trustworthiness rate based on information that we get.

Norton Connect Safe

Last Updated: 03/22/2025

chemspider.com is safe.

Norton ConnectSafe evaluates chemspider.com for any unsafe and insecure content. The results are critical for families with young children.

Google Safe Search

Last Updated: 02/09/2019

chemspider.com is safe.

SafeSearch is used as a parental control tool to filter out any inappropriate for your children search results on your devices: phones, tablets or personal computers.

Google Safe Browsing

Last Updated: 01/09/2019

chemspider.com is safe.
Malware: not found.
Phishing: not detected.
Unwanted software: not found.
Harmfull applications: not found.

Google Safe Browsing notifies when websites are compromised by malicious actors. These protections work across Google products and provide a safer online experience.

Site Advisor

Last Updated: 02/22/2021

chemspider.com is safe.

McAfee assesses chemspider.com for a meaningful set of security threats. Featured dangers from annoying pop-ups to hidden Trojans, that can steal your identity, will be revealed. McAfee does not analyze chemspider.com for mature or inappropriate content, only security checks are evaluated.

Web of Trust

Last Updated: 01/09/2019

chemspider.com child safety is very good.

The WOT calculates reputation of the chemspider.com. This reputation system receives ratings from users and information from third-party sources, assesses the chemspider.com for safety features and confirms, whether chemspider.com is suitable for children.

SSL Information

SSL Checker Tool

Domain	chemspider.com
Issuer Organization	Let's Encrypt
Issuer	R10
Algorithm	RSA-SHA256
Valid form	10/11/2024
Expiration	01/09/2025
Signed	Certificate is not self signed
Additional Domains	chemspider.com

Chemspider.com Rank History

Alexa Rank shows how popular chemspider.com is in comparison with other sites. The most popular site has Alexa Rank equals 1. If chemspider.com has Alexa Rank equals 100,000, then it is in TOP 100,000 popular sites in the world. The rank is calculated using a combination of average daily visitors to chemspider.com and pageviews on chemspider.com over the past 3 months.

Chemspider.com Hosting Information

Server Location

Geolocation Tool

ASN Information

ASN Lookup Tool

ASN ID: 16509

ASN Title: AMAZON-02 - Amazon.com, Inc., US

Last Update: 04/12/2025

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/whois_reporting/index.html
#
# Copyright 1997-2018, American Registry for Internet Numbers, Ltd.
#

ASNumber: 16509
ASName: AMAZON-02
ASHandle: AS16509
RegDate: 2000-05-03
Updated: 2012-03-02
Ref: https://rdap.arin.net/registry/autnum/16509

OrgName: Amazon.com, Inc.
OrgId: AMAZON-4
Address: 1918 8th Ave
City: SEATTLE
StateProv: WA
PostalCode: 98101-1244
Country: US
RegDate: 1995-01-23
Updated: 2017-01-28
Ref: https://rdap.arin.net/registry/entity/AMAZON-4

OrgAbuseHandle: AEA8-ARIN
OrgAbuseName: Amazon EC2 Abuse
OrgAbusePhone: +1-206-266-4064
OrgAbuseEmail: abuse@amazonaws.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/AEA8-ARIN

OrgTechHandle: ANO24-ARIN
OrgTechName: Amazon EC2 Network Operations
OrgTechPhone: +1-206-266-4064
OrgTechEmail: amzn-noc-contact@amazon.com
OrgTechRef: https://rdap.arin.net/registry/entity/ANO24-ARIN

RTechHandle: AC6-ORG-ARIN
RTechName: Amazon-com Incorporated
RTechPhone: +1-206-266-2187
RTechEmail: ipmanagement@amazon.com
RTechRef: https://rdap.arin.net/registry/entity/AC6-ORG-ARIN

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/whois_reporting/index.html
#
# Copyright 1997-2018, American Registry for Internet Numbers, Ltd.
#

Chemspider.com Domain Registration and Settings

WHOIS

WHOIS Lookup Tool

Domain Name: CHEMSPIDER.COM
Registry Domain ID: 656884984_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.domaindiscover.com
Registrar URL: http://tierra.net
Updated Date: 2023-08-09T13:26:07Z
Creation Date: 2006-11-04T03:00:18Z
Registry Expiry Date: 2025-11-04T03:00:18Z
Registrar: DomainSpot LLC
Registrar IANA ID: 86
Registrar Abuse Contact Email: icann-abuse-reports@tierra.net
Registrar Abuse Contact Phone: 6193932105
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Name Server: A1-90.AKAM.NET
Name Server: A22-67.AKAM.NET
Name Server: A28-64.AKAM.NET
Name Server: A3-65.AKAM.NET
Name Server: A6-66.AKAM.NET
Name Server: A7-67.AKAM.NET
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2024-09-12T05:26:10Z

DNS Records

DNS Lookup Tool

Host	A Record	TTL
chemspider.com	78.25.196.143	3600

Host	MX Record	Priority	TTL
chemspider.com	eu-smtp-inbound-2.mimecast.com	10	3600
chemspider.com	eu-smtp-inbound-1.mimecast.com	10	3600

Host	NS Record	TTL
chemspider.com	a6-66.akam.net	3600
chemspider.com	a22-67.akam.net	3600
chemspider.com	a28-64.akam.net	3600
chemspider.com	a3-65.akam.net	3600
chemspider.com	a7-67.akam.net	3600
chemspider.com	a1-90.akam.net	3600

Host	TXT Record	TTL
chemspider.com	5z5pz87d4c9pklbxl805g2xh2pj5kyrv	3600

a28-64.akam.net
TTL: 3600
Email address: dnsadmin.rsc.org
Serial: 2016092716
Refresh: 43200
Retry: 7200
Expire: 1209600
Minimum: 3600

Chemspider.com HTML Check

HTML Validation Tool

Errors

Almost standards mode doctype. Expected “<!DOCTYPE html>”.

Any “input” descendant of a “label” element with a “for” attribute must have an ID value that matches that “for” attribute.

The “label” element may contain at most one “button”, “input”, “meter”, “output”, “progress”, “select”, or “textarea” descendant.

Any “button” descendant of a “label” element with a “for” attribute must have an ID value that matches that “for” attribute.

An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.

Element “ul” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)

Duplicate attribute “name”.

The element “button” must not appear as a descendant of the “a” element.

The “width” attribute on the “table” element is obsolete. Use CSS instead.

The “cellspacing” attribute on the “table” element is obsolete. Use CSS instead.

The “cellpadding” attribute on the “table” element is obsolete. Use CSS instead.

The “border” attribute on the “table” element is obsolete. Use CSS instead.

The “align” attribute on the “tr” element is obsolete. Use CSS instead.

The “font” element is obsolete. Use CSS instead.

Attribute “scale” not allowed on element “img” at this point.

No “p” element in scope but a “p” end tag seen.

The value of the “for” attribute of the “label” element must be the ID of a non-hidden form control.

Warnings

The “type” attribute is unnecessary for JavaScript resources.

The “language” attribute on the “script” element is obsolete. You can safely omit it.

“label” element with multiple labelable descendants.

Consider adding a “lang” attribute to the “html” start tag to declare the language of this document.

Chemspider.com Desktop Performance

Last tested: 12/11/2019

Desktop Speed

77%

Leverage browser caching

Eliminate render-blocking JavaScript and CSS in above-the-fold content

Optimize images

Minify JavaScript

Minify CSS

Enable compression

Desktop Resource Breakdown

Total Resources	109
Number of Hosts	16
Static Resources	56
JavaScript Resources	47
CSS Resources	20

Chemspider.com Mobile Insights

Last tested: 12/11/2019

Mobile Usability

97%

Size tap targets appropriately

Mobile Speed

62%

Eliminate render-blocking JavaScript and CSS in above-the-fold content

Leverage browser caching

Optimize images

Minify JavaScript

Minify CSS

Enable compression

Mobile Resource Breakdown

Total Resources	104
Number of Hosts	15
Static Resources	56
JavaScript Resources	47
CSS Resources	20

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Chemspider.com ChemSpider | Search and share chemistry

ChemSpider is a free chemical structure database providing fast access to over 100 million structures, properties and associated information.

Chemspider.com Overview

Chemspider.com Rank Summary

Chemspider.com Website Safety

Chemspider.com Rank History

Chemspider.com Hosting Information

Chemspider.com Domain Registration and Settings

Chemspider.com HTML Check

Chemspider.com Desktop Performance

Chemspider.com Mobile Insights

Chemspider.com Similar Audits

Chemspider.com Common Typos