CAS sankhya

CAS (kais) panjeekaran sankhya^[1], raasaayanik tatvon, yaugikon, paulimron, jaivik anukramon, mishranon aur mishr dhaatuon ke liye ek adviteeya sankhyaatmak pehchaan hai.^[2] ise kais sankhya, CAS RNs ya CAS #s bhi kaha jaata hai.

kaimikl ebastraikts service (Chemical Abstracts Service-CAS) (hindi anuvaad: raasaayanik saar seva), American kaimikl society ka ek prabhaag hai jo har gyaat rasaayan ko ek adviteeya pehchaan sankhya pradaan karti hai. is poori kavaayad ka uddeshya daataabes khojon ko aur adhik suvidhaajanak banaana hai, kyonki aksar ek rasaayan ke kai naam hote hai. lagbhag saare anu daataabes aaj kais sankhya ke dvaara khoj ki anumati dete hain.

sitmbar 2009 tak, kais rajistri mein 5 karod se adhik kaarbanik aur akaarbanik padaarth aur 6.1 karod se adhik anukram the^[3] aur jismein pratyek saptaah lagbhag 50,000 nai sankhyaaon ki vruddhi ho rahi hai. kais in rasaayanon ke daataabes kais rajistri, ka anurakshan aur vikraya bhi karta hai.