CAS号(Chemical Abstracts Service Registry Number)是指一种针对化合物的标识系统。CAS号是由美国化学文摘社(Chemical Abstracts Service)所创立,在全球范围内被广泛应用于化学品的知识产权、化学计量以及环境和健康方面的调查和研究。CAS号是由3个组成部分构成的10位数字序列,可以唯一地标识一种特定的化合物。 CAS号的...
CAS编码规则由一个12位的数字序列组成,被称为CAS号码(CAS Registry Number)。CAS号码是全球范围内唯一的,每个化学物质都有一个不同的CAS号码。它由三个部分组成,分别是区号(Identifier)和检测码(Check Digit)以及顺序码(Sequential Number)。下面我们逐一介绍这三个部分的含义和作用: 1.区号(Identifier):区号由两到...
气体CAS登记号(CAS Registry Number)是一种用来唯一标识气体的编码系统,通常由数字组成,是化学物质在CAS(Chemical Abstracts Service)数据库中的唯一标识符。CAS登记号是国际通用的,用于确保不同国家和地区之间的化学品识别。CAS号一般由三类号码组成:前缀部分,一般为2-7位的数字;连接号“-”;后缀部分,一般为2-6位...
If you have access to CAS online, or some other search services, you can search for the element using the CAS registry numberr. The registry number is a "smart number". The last digit is a check-digit to which helps to ensure that any given CAS registry numberr is authentic....
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CAS registry number is separated by hyphens into three parts, the first consisting of up to 6 digits, the second consisting of two digits, and the third consisting of a single digit serving as a check digit.2。 UN no. 才是危险品特有的。 运输都要有这号码。UN numbers or UN IDs are ...
Check Digit Verification of cas no The CAS Registry Mumber 4366-59-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,3,6 and 6 respectively; the second part has 2 digits, 5 and 9 respectively. ...
Check Digit Verification of cas no The CAS Registry Mumber 202289-38-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,2,2,8 and 9 respectively; the second part has 2 digits, 3 and 8 respectively. ...
Check Digit Verification of cas no The CAS Registry Mumber 127087-87-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,7,0,8 and 7 respectively; the second part has 2 digits, 8 and 7 respectively. ...
CAS registry number is separated by hyphens into three parts, the first consisting of up to 6 digits, the second consisting of two digits, and the third consisting of a single digit serving as a check digit.2。 UN no. 才是危险品特有的。 运输都要有这号码。UN numbers or UN ...